steve/jaw-coupling

Jaw shaft coupling, clamping type: 14, 20 and 30 mm outside diameter, bores 3 to 12 mm.

v1.0.0 Latest STEVE MIT 0

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Open in STEVE

Isometric

Parameters

Preset18 sizes

Outside diameter

142030

Bore 111 options

Bore 211 options

d1 <= d2, both offered on the outside diameter chosen.

Detail

fullsimple

full: jaws, slits and clamp screw holes. simple: a plain cylinder with the bores.

Defaults built

part.py 70 lines · Python · STEVE runtime · checked

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"""Jaw coupling, clamping type. Axis along Z, the first hub's end face on the XY plane, bore d1 in the first hub, bore d2 in the second. Two hubs and a spacer,

three bodies. Fit dimensions from MISUMI's table; see the README."""

import math

import cadquery as cq

from steve import Model

size = 20 # mm Outside diameter D

d1 = 5 # mm Bore 1 (d1 <= d2)

d2 = 8 # mm Bore 2

detail = "full" # full: jaws, slits and clamp screw holes; simple: plain cylinder with the bores

# D: (L, hub length l, spacer B, gap C, screw from the end F, screw offset G, clamp screw M, bores offered).

# MISUMI Couplings catalogue, Jaw Couplings, Clamping, CPJC table, https://de.misumi-ec.com/files/images/products/docs/flexibleshaftcouplings.pdf, PDF p. 20.

SIZES = {

14: (22, 7, 6, 1, 3.5, 4, 2, (3, 4, 5)),

20: (30, 10, 8, 1, 5, 6.5, 2.5, (5, 6, 6.35, 7, 8)),

30: (35, 11, 10, 1.5, 5.5, 10, 4, (7, 8, 9.525, 10, 11, 12)),

}

L, hub, spacer_h, gap, screw_at, screw_off, screw, bores = SIZES[size]

if d1 not in bores or d2 not in bores or d1 > d2:

raise ValueError(f"The {size} mm jaw coupling offers bores {bores}, with d1 <= d2.")

R = size / 2

SLIT = 0.05 * size # the slit's width, the jaws' width and inner radius, and the spacer's shape are proportions, for looks

JAW = 40

INNER = 0.45 * R

def sector(angle, spread, inner, outer, z0, height):

"""A sector of a ring, spread degrees wide."""

a, b, c = (math.radians(angle + t) for t in (-spread / 2, 0, spread / 2))

return (cq.Workplane("XY").workplane(offset=z0).moveTo(inner * math.cos(a), inner * math.sin(a)).lineTo(outer * math.cos(a), outer * math.sin(a))

.threePointArc((outer * math.cos(b), outer * math.sin(b)), (outer * math.cos(c), outer * math.sin(c)))

.lineTo(inner * math.cos(c), inner * math.sin(c)).threePointArc((inner * math.cos(b), inner * math.sin(b)), (inner * math.cos(a), inner * math.sin(a))).close().extrude(height))

def half(z0, first_angle, bore, slit_z0):

"""One hub with its three jaws, from z0 for a hub length, the jaws reaching across the spacer."""

near, far = (hub, hub + gap) if first_angle == 0 else (hub + gap, hub)

shape = cq.Workplane("XY").workplane(offset=z0).circle(R).extrude(hub)

for k in range(3):

shape = shape.union(sector(first_angle + 120 * k, JAW, 1.1 * INNER, R, near, L - 2 * hub - gap), clean=False)

shape = shape.cut(cq.Workplane("XY").workplane(offset=slit_z0).center(R / 2 + 0.5, 0).rect(R + 1, SLIT).extrude(hub + 1))

shape = shape.cut(cq.Workplane("XY").workplane(offset=z0 - 1).circle(bore / 2).extrude(hub + 2))

return shape

model = Model()

if detail == "simple":

body = cq.Workplane("XY").circle(R).extrude(L)

body = body.cut(cq.Workplane("XY").workplane(offset=-1).circle(d1 / 2).extrude(L / 2 + 1))

body = body.cut(cq.Workplane("XY").workplane(offset=L / 2).circle(d2 / 2).extrude(L / 2 + 1))

model.add("body", body, name="Jaw coupling")

model.material("aluminum-generic", color="#c9ccd1")

else:

first = half(0, 0, d1, -1)

second = half(L - hub, 60, d2, L - hub)

for z in (screw_at, L - screw_at):

cross = cq.Workplane("YZ").center(screw_off, z).circle(screw / 2).extrude(R + 1, both=True)

first, second = first.cut(cross), second.cut(cross)

spacer = cq.Workplane("XY").workplane(offset=hub + gap).circle(INNER).circle(d2 / 2 + 0.3).extrude(spacer_h)

for k in range(6):

spacer = spacer.union(sector(30 + 60 * k, 60 - JAW - 2, 0.9 * INNER, R * 0.82, hub + gap, spacer_h), clean=False)

model.add("hub_1", first, op="new", body="hub_1_body", name="Hub, d1")

model.add("hub_2", second, op="new", body="hub_2_body", name="Hub, d2")

model.add("spacer", spacer, op="new", body="spacer_body", name="Spacer")

model.material("aluminum-generic", bodies=["hub_1_body", "hub_2_body"], color="#c9ccd1")

model.material("tpu-98a", bodies=["spacer_body"], color="#c8362e")

result = model.result()

"""Jaw coupling, clamping type. Axis along Z, the first hub's end face on the XY plane, bore d1 in the first hub, bore d2 in the second. Two hubs and a spacer,
three bodies. Fit dimensions from MISUMI's table; see the README."""
import math

import cadquery as cq
from steve import Model

size = 20  # mm Outside diameter D
d1 = 5  # mm Bore 1 (d1 <= d2)
d2 = 8  # mm Bore 2
detail = "full"  # full: jaws, slits and clamp screw holes; simple: plain cylinder with the bores

# D: (L, hub length l, spacer B, gap C, screw from the end F, screw offset G, clamp screw M, bores offered).
# MISUMI Couplings catalogue, Jaw Couplings, Clamping, CPJC table, https://de.misumi-ec.com/files/images/products/docs/flexibleshaftcouplings.pdf, PDF p. 20.
SIZES = {
    14: (22, 7, 6, 1, 3.5, 4, 2, (3, 4, 5)),
    20: (30, 10, 8, 1, 5, 6.5, 2.5, (5, 6, 6.35, 7, 8)),
    30: (35, 11, 10, 1.5, 5.5, 10, 4, (7, 8, 9.525, 10, 11, 12)),
}
L, hub, spacer_h, gap, screw_at, screw_off, screw, bores = SIZES[size]
if d1 not in bores or d2 not in bores or d1 > d2:
    raise ValueError(f"The {size} mm jaw coupling offers bores {bores}, with d1 <= d2.")
R = size / 2
SLIT = 0.05 * size   # the slit's width, the jaws' width and inner radius, and the spacer's shape are proportions, for looks
JAW = 40
INNER = 0.45 * R


def sector(angle, spread, inner, outer, z0, height):
    """A sector of a ring, spread degrees wide."""
    a, b, c = (math.radians(angle + t) for t in (-spread / 2, 0, spread / 2))
    return (cq.Workplane("XY").workplane(offset=z0).moveTo(inner * math.cos(a), inner * math.sin(a)).lineTo(outer * math.cos(a), outer * math.sin(a))
            .threePointArc((outer * math.cos(b), outer * math.sin(b)), (outer * math.cos(c), outer * math.sin(c)))
            .lineTo(inner * math.cos(c), inner * math.sin(c)).threePointArc((inner * math.cos(b), inner * math.sin(b)), (inner * math.cos(a), inner * math.sin(a))).close().extrude(height))


def half(z0, first_angle, bore, slit_z0):
    """One hub with its three jaws, from z0 for a hub length, the jaws reaching across the spacer."""
    near, far = (hub, hub + gap) if first_angle == 0 else (hub + gap, hub)
    shape = cq.Workplane("XY").workplane(offset=z0).circle(R).extrude(hub)
    for k in range(3):
        shape = shape.union(sector(first_angle + 120 * k, JAW, 1.1 * INNER, R, near, L - 2 * hub - gap), clean=False)
    shape = shape.cut(cq.Workplane("XY").workplane(offset=slit_z0).center(R / 2 + 0.5, 0).rect(R + 1, SLIT).extrude(hub + 1))
    shape = shape.cut(cq.Workplane("XY").workplane(offset=z0 - 1).circle(bore / 2).extrude(hub + 2))
    return shape


model = Model()
if detail == "simple":
    body = cq.Workplane("XY").circle(R).extrude(L)
    body = body.cut(cq.Workplane("XY").workplane(offset=-1).circle(d1 / 2).extrude(L / 2 + 1))
    body = body.cut(cq.Workplane("XY").workplane(offset=L / 2).circle(d2 / 2).extrude(L / 2 + 1))
    model.add("body", body, name="Jaw coupling")
    model.material("aluminum-generic", color="#c9ccd1")
else:
    first = half(0, 0, d1, -1)
    second = half(L - hub, 60, d2, L - hub)
    for z in (screw_at, L - screw_at):
        cross = cq.Workplane("YZ").center(screw_off, z).circle(screw / 2).extrude(R + 1, both=True)
        first, second = first.cut(cross), second.cut(cross)
    spacer = cq.Workplane("XY").workplane(offset=hub + gap).circle(INNER).circle(d2 / 2 + 0.3).extrude(spacer_h)
    for k in range(6):
        spacer = spacer.union(sector(30 + 60 * k, 60 - JAW - 2, 0.9 * INNER, R * 0.82, hub + gap, spacer_h), clean=False)
    model.add("hub_1", first, op="new", body="hub_1_body", name="Hub, d1")
    model.add("hub_2", second, op="new", body="hub_2_body", name="Hub, d2")
    model.add("spacer", spacer, op="new", body="spacer_body", name="Spacer")
    model.material("aluminum-generic", bodies=["hub_1_body", "hub_2_body"], color="#c9ccd1")
    model.material("tpu-98a", bodies=["spacer_body"], color="#c8362e")
result = model.result()

pypart.toml 163 lines · TOML

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name = "steve/jaw-coupling"

version = "1.0.0"

runtime = "steve"

license = "MIT"

summary = "Jaw shaft coupling, clamping type: 14, 20 and 30 mm outside diameter, bores 3 to 12 mm."

description = """Jaw shaft coupling, clamping type, as two hubs and a spacer, with jaws, slits and clamp screw holes. Sizes and bores from MISUMI's CPJC table. See the README."""

tags = ["coupling", "shaft-coupling", "jaw-coupling", "spider", "power-transmission", "metric"]

[parameters.size]

type = "choice"

default = 20

choices = [14, 20, 30]

unit = "mm"

label = "Outside diameter"

[parameters.d1]

type = "choice"

default = 5

choices = [3, 4, 5, 6, 6.35, 7, 8, 9.525, 10, 11, 12]

unit = "mm"

label = "Bore 1"

[parameters.d2]

type = "choice"

default = 8

choices = [3, 4, 5, 6, 6.35, 7, 8, 9.525, 10, 11, 12]

unit = "mm"

label = "Bore 2"

description = "d1 <= d2, both offered on the outside diameter chosen."

[parameters.detail]

type = "choice"

default = "full"

choices = ["full", "simple"]

label = "Detail"

description = "full: jaws, slits and clamp screw holes. simple: a plain cylinder with the bores."

[[presets]]

id = "CPJC14-3-3"

title = "Jaw coupling D14, 3 to 3 mm"

params = { size = 14, d1 = 3, d2 = 3 }

aliases = ["3x3 jaw coupling", "3 to 3 jaw coupling", "3mm to 3mm jaw coupling", "3-3 jaw coupling", "CPJC14", "D14 jaw coupling", "spider coupling 3x3", "coupling kind=jaw_coupling; bore1=3 mm; bore2=3 mm; set screw/clamp envelope"]

standard = "MISUMI"

[[presets]]

id = "CPJC14-3-4"

title = "Jaw coupling D14, 3 to 4 mm"

params = { size = 14, d1 = 3, d2 = 4 }

aliases = ["3x4 jaw coupling", "3 to 4 jaw coupling", "3mm to 4mm jaw coupling", "3-4 jaw coupling", "CPJC14", "D14 jaw coupling", "spider coupling 3x4", "coupling kind=jaw_coupling; bore1=3 mm; bore2=4 mm; set screw/clamp envelope"]

standard = "MISUMI"

[[presets]]

id = "CPJC14-3-5"

title = "Jaw coupling D14, 3 to 5 mm"

params = { size = 14, d1 = 3, d2 = 5 }

aliases = ["3x5 jaw coupling", "3 to 5 jaw coupling", "3mm to 5mm jaw coupling", "3-5 jaw coupling", "CPJC14", "D14 jaw coupling", "spider coupling 3x5", "coupling kind=jaw_coupling; bore1=3 mm; bore2=5 mm; set screw/clamp envelope"]

standard = "MISUMI"

[[presets]]

id = "CPJC14-4-4"

title = "Jaw coupling D14, 4 to 4 mm"

params = { size = 14, d1 = 4, d2 = 4 }

aliases = ["4x4 jaw coupling", "4 to 4 jaw coupling", "4mm to 4mm jaw coupling", "4-4 jaw coupling", "CPJC14", "D14 jaw coupling", "spider coupling 4x4", "coupling kind=jaw_coupling; bore1=4 mm; bore2=4 mm; set screw/clamp envelope"]

standard = "MISUMI"

[[presets]]

id = "CPJC14-4-5"

title = "Jaw coupling D14, 4 to 5 mm"

params = { size = 14, d1 = 4, d2 = 5 }

aliases = ["4x5 jaw coupling", "4 to 5 jaw coupling", "4mm to 5mm jaw coupling", "4-5 jaw coupling", "CPJC14", "D14 jaw coupling", "spider coupling 4x5", "coupling kind=jaw_coupling; bore1=4 mm; bore2=5 mm; set screw/clamp envelope"]

standard = "MISUMI"

[[presets]]

id = "CPJC14-5-5"

title = "Jaw coupling D14, 5 to 5 mm"

params = { size = 14, d1 = 5, d2 = 5 }

aliases = ["5x5 jaw coupling", "5 to 5 jaw coupling", "5mm to 5mm jaw coupling", "5-5 jaw coupling", "CPJC14", "D14 jaw coupling", "spider coupling 5x5", "coupling kind=jaw_coupling; bore1=5 mm; bore2=5 mm; set screw/clamp envelope"]

standard = "MISUMI"

[[presets]]

id = "CPJC20-5-6"

title = "Jaw coupling D20, 5 to 6 mm"

params = { size = 20, d1 = 5, d2 = 6 }

aliases = ["5x6 jaw coupling", "5 to 6 jaw coupling", "5mm to 6mm jaw coupling", "5-6 jaw coupling", "CPJC20", "D20 jaw coupling", "spider coupling 5x6", "coupling kind=jaw_coupling; bore1=5 mm; bore2=6 mm; set screw/clamp envelope"]

standard = "MISUMI"

[[presets]]

id = "CPJC20-5-6.35"

title = "Jaw coupling D20, 5 to 6.35 mm"

params = { size = 20, d1 = 5, d2 = 6.35 }

aliases = ["5x6.35 jaw coupling", "5 to 6.35 jaw coupling", "5mm to 6.35mm jaw coupling", "5-6.35 jaw coupling", "CPJC20", "D20 jaw coupling", "spider coupling 5x6.35", "coupling kind=jaw_coupling; bore1=5 mm; bore2=6.35 mm; set screw/clamp envelope"]

standard = "MISUMI"

[[presets]]

id = "CPJC20-5-8"

title = "Jaw coupling D20, 5 to 8 mm"

params = { size = 20, d1 = 5, d2 = 8 }

aliases = ["5x8 jaw coupling", "5 to 8 jaw coupling", "5mm to 8mm jaw coupling", "5-8 jaw coupling", "CPJC20", "D20 jaw coupling", "spider coupling 5x8", "coupling kind=jaw_coupling; bore1=5 mm; bore2=8 mm; set screw/clamp envelope"]

standard = "MISUMI"

100

101

[[presets]]

102

id = "CPJC20-6-6"

103

title = "Jaw coupling D20, 6 to 6 mm"

104

params = { size = 20, d1 = 6, d2 = 6 }

105

aliases = ["6x6 jaw coupling", "6 to 6 jaw coupling", "6mm to 6mm jaw coupling", "6-6 jaw coupling", "CPJC20", "D20 jaw coupling", "spider coupling 6x6", "coupling kind=jaw_coupling; bore1=6 mm; bore2=6 mm; set screw/clamp envelope"]

106

standard = "MISUMI"

107

108

[[presets]]

109

id = "CPJC20-6-6.35"

110

title = "Jaw coupling D20, 6 to 6.35 mm"

111

params = { size = 20, d1 = 6, d2 = 6.35 }

112

aliases = ["6x6.35 jaw coupling", "6 to 6.35 jaw coupling", "6mm to 6.35mm jaw coupling", "6-6.35 jaw coupling", "CPJC20", "D20 jaw coupling", "spider coupling 6x6.35", "coupling kind=jaw_coupling; bore1=6 mm; bore2=6.35 mm; set screw/clamp envelope"]

113

standard = "MISUMI"

114

115

[[presets]]

116

id = "CPJC20-6-8"

117

title = "Jaw coupling D20, 6 to 8 mm"

118

params = { size = 20, d1 = 6, d2 = 8 }

119

aliases = ["6x8 jaw coupling", "6 to 8 jaw coupling", "6mm to 8mm jaw coupling", "6-8 jaw coupling", "CPJC20", "D20 jaw coupling", "spider coupling 6x8", "coupling kind=jaw_coupling; bore1=6 mm; bore2=8 mm; set screw/clamp envelope"]

120

standard = "MISUMI"

121

122

[[presets]]

123

id = "CPJC20-6.35-6.35"

124

title = "Jaw coupling D20, 6.35 to 6.35 mm"

125

params = { size = 20, d1 = 6.35, d2 = 6.35 }

126

aliases = ["6.35x6.35 jaw coupling", "6.35 to 6.35 jaw coupling", "6.35mm to 6.35mm jaw coupling", "6.35-6.35 jaw coupling", "CPJC20", "D20 jaw coupling", "spider coupling 6.35x6.35", "coupling kind=jaw_coupling; bore1=6.35 mm; bore2=6.35 mm; set screw/clamp envelope"]

127

standard = "MISUMI"

128

129

[[presets]]

130

id = "CPJC20-6.35-8"

131

title = "Jaw coupling D20, 6.35 to 8 mm"

132

params = { size = 20, d1 = 6.35, d2 = 8 }

133

aliases = ["6.35x8 jaw coupling", "6.35 to 8 jaw coupling", "6.35mm to 8mm jaw coupling", "6.35-8 jaw coupling", "CPJC20", "D20 jaw coupling", "spider coupling 6.35x8", "coupling kind=jaw_coupling; bore1=6.35 mm; bore2=8 mm; set screw/clamp envelope"]

134

standard = "MISUMI"

135

136

[[presets]]

137

id = "CPJC20-8-8"

138

title = "Jaw coupling D20, 8 to 8 mm"

139

params = { size = 20, d1 = 8, d2 = 8 }

140

aliases = ["8x8 jaw coupling", "8 to 8 jaw coupling", "8mm to 8mm jaw coupling", "8-8 jaw coupling", "CPJC20", "D20 jaw coupling", "spider coupling 8x8", "coupling kind=jaw_coupling; bore1=8 mm; bore2=8 mm; set screw/clamp envelope"]

141

standard = "MISUMI"

142

143

[[presets]]

144

id = "CPJC30-8-10"

145

title = "Jaw coupling D30, 8 to 10 mm"

146

params = { size = 30, d1 = 8, d2 = 10 }

147

aliases = ["8x10 jaw coupling", "8 to 10 jaw coupling", "8mm to 10mm jaw coupling", "8-10 jaw coupling", "CPJC30", "D30 jaw coupling", "spider coupling 8x10", "coupling kind=jaw_coupling; bore1=8 mm; bore2=10 mm; set screw/clamp envelope"]

148

standard = "MISUMI"

149

150

[[presets]]

151

id = "CPJC30-10-10"

152

title = "Jaw coupling D30, 10 to 10 mm"

153

params = { size = 30, d1 = 10, d2 = 10 }

154

aliases = ["10x10 jaw coupling", "10 to 10 jaw coupling", "10mm to 10mm jaw coupling", "10-10 jaw coupling", "CPJC30", "D30 jaw coupling", "spider coupling 10x10", "coupling kind=jaw_coupling; bore1=10 mm; bore2=10 mm; set screw/clamp envelope"]

155

standard = "MISUMI"

156

157

[[presets]]

158

id = "CPJC20-5-8-simple"

159

title = "Jaw coupling D20, 5 to 8 mm, simple"

160

params = { size = 20, d1 = 5, d2 = 8, detail = "simple" }

161

aliases = ["CPJC20-5-8 simple"]

162

standard = "MISUMI"

163

name = "steve/jaw-coupling"
version = "1.0.0"
runtime = "steve"
license = "MIT"
summary = "Jaw shaft coupling, clamping type: 14, 20 and 30 mm outside diameter, bores 3 to 12 mm."
description = """Jaw shaft coupling, clamping type, as two hubs and a spacer, with jaws, slits and clamp screw holes. Sizes and bores from MISUMI's CPJC table. See the README."""
tags = ["coupling", "shaft-coupling", "jaw-coupling", "spider", "power-transmission", "metric"]

[parameters.size]
type = "choice"
default = 20
choices = [14, 20, 30]
unit = "mm"
label = "Outside diameter"

[parameters.d1]
type = "choice"
default = 5
choices = [3, 4, 5, 6, 6.35, 7, 8, 9.525, 10, 11, 12]
unit = "mm"
label = "Bore 1"

[parameters.d2]
type = "choice"
default = 8
choices = [3, 4, 5, 6, 6.35, 7, 8, 9.525, 10, 11, 12]
unit = "mm"
label = "Bore 2"
description = "d1 <= d2, both offered on the outside diameter chosen."

[parameters.detail]
type = "choice"
default = "full"
choices = ["full", "simple"]
label = "Detail"
description = "full: jaws, slits and clamp screw holes. simple: a plain cylinder with the bores."

[[presets]]
id = "CPJC14-3-3"
title = "Jaw coupling D14, 3 to 3 mm"
params = { size = 14, d1 = 3, d2 = 3 }
aliases = ["3x3 jaw coupling", "3 to 3 jaw coupling", "3mm to 3mm jaw coupling", "3-3 jaw coupling", "CPJC14", "D14 jaw coupling", "spider coupling 3x3", "coupling kind=jaw_coupling; bore1=3 mm; bore2=3 mm; set screw/clamp envelope"]
standard = "MISUMI"

[[presets]]
id = "CPJC14-3-4"
title = "Jaw coupling D14, 3 to 4 mm"
params = { size = 14, d1 = 3, d2 = 4 }
aliases = ["3x4 jaw coupling", "3 to 4 jaw coupling", "3mm to 4mm jaw coupling", "3-4 jaw coupling", "CPJC14", "D14 jaw coupling", "spider coupling 3x4", "coupling kind=jaw_coupling; bore1=3 mm; bore2=4 mm; set screw/clamp envelope"]
standard = "MISUMI"

[[presets]]
id = "CPJC14-3-5"
title = "Jaw coupling D14, 3 to 5 mm"
params = { size = 14, d1 = 3, d2 = 5 }
aliases = ["3x5 jaw coupling", "3 to 5 jaw coupling", "3mm to 5mm jaw coupling", "3-5 jaw coupling", "CPJC14", "D14 jaw coupling", "spider coupling 3x5", "coupling kind=jaw_coupling; bore1=3 mm; bore2=5 mm; set screw/clamp envelope"]
standard = "MISUMI"

[[presets]]
id = "CPJC14-4-4"
title = "Jaw coupling D14, 4 to 4 mm"
params = { size = 14, d1 = 4, d2 = 4 }
aliases = ["4x4 jaw coupling", "4 to 4 jaw coupling", "4mm to 4mm jaw coupling", "4-4 jaw coupling", "CPJC14", "D14 jaw coupling", "spider coupling 4x4", "coupling kind=jaw_coupling; bore1=4 mm; bore2=4 mm; set screw/clamp envelope"]
standard = "MISUMI"

[[presets]]
id = "CPJC14-4-5"
title = "Jaw coupling D14, 4 to 5 mm"
params = { size = 14, d1 = 4, d2 = 5 }
aliases = ["4x5 jaw coupling", "4 to 5 jaw coupling", "4mm to 5mm jaw coupling", "4-5 jaw coupling", "CPJC14", "D14 jaw coupling", "spider coupling 4x5", "coupling kind=jaw_coupling; bore1=4 mm; bore2=5 mm; set screw/clamp envelope"]
standard = "MISUMI"

[[presets]]
id = "CPJC14-5-5"
title = "Jaw coupling D14, 5 to 5 mm"
params = { size = 14, d1 = 5, d2 = 5 }
aliases = ["5x5 jaw coupling", "5 to 5 jaw coupling", "5mm to 5mm jaw coupling", "5-5 jaw coupling", "CPJC14", "D14 jaw coupling", "spider coupling 5x5", "coupling kind=jaw_coupling; bore1=5 mm; bore2=5 mm; set screw/clamp envelope"]
standard = "MISUMI"

[[presets]]
id = "CPJC20-5-6"
title = "Jaw coupling D20, 5 to 6 mm"
params = { size = 20, d1 = 5, d2 = 6 }
aliases = ["5x6 jaw coupling", "5 to 6 jaw coupling", "5mm to 6mm jaw coupling", "5-6 jaw coupling", "CPJC20", "D20 jaw coupling", "spider coupling 5x6", "coupling kind=jaw_coupling; bore1=5 mm; bore2=6 mm; set screw/clamp envelope"]
standard = "MISUMI"

[[presets]]
id = "CPJC20-5-6.35"
title = "Jaw coupling D20, 5 to 6.35 mm"
params = { size = 20, d1 = 5, d2 = 6.35 }
aliases = ["5x6.35 jaw coupling", "5 to 6.35 jaw coupling", "5mm to 6.35mm jaw coupling", "5-6.35 jaw coupling", "CPJC20", "D20 jaw coupling", "spider coupling 5x6.35", "coupling kind=jaw_coupling; bore1=5 mm; bore2=6.35 mm; set screw/clamp envelope"]
standard = "MISUMI"

[[presets]]
id = "CPJC20-5-8"
title = "Jaw coupling D20, 5 to 8 mm"
params = { size = 20, d1 = 5, d2 = 8 }
aliases = ["5x8 jaw coupling", "5 to 8 jaw coupling", "5mm to 8mm jaw coupling", "5-8 jaw coupling", "CPJC20", "D20 jaw coupling", "spider coupling 5x8", "coupling kind=jaw_coupling; bore1=5 mm; bore2=8 mm; set screw/clamp envelope"]
standard = "MISUMI"

[[presets]]
id = "CPJC20-6-6"
title = "Jaw coupling D20, 6 to 6 mm"
params = { size = 20, d1 = 6, d2 = 6 }
aliases = ["6x6 jaw coupling", "6 to 6 jaw coupling", "6mm to 6mm jaw coupling", "6-6 jaw coupling", "CPJC20", "D20 jaw coupling", "spider coupling 6x6", "coupling kind=jaw_coupling; bore1=6 mm; bore2=6 mm; set screw/clamp envelope"]
standard = "MISUMI"

[[presets]]
id = "CPJC20-6-6.35"
title = "Jaw coupling D20, 6 to 6.35 mm"
params = { size = 20, d1 = 6, d2 = 6.35 }
aliases = ["6x6.35 jaw coupling", "6 to 6.35 jaw coupling", "6mm to 6.35mm jaw coupling", "6-6.35 jaw coupling", "CPJC20", "D20 jaw coupling", "spider coupling 6x6.35", "coupling kind=jaw_coupling; bore1=6 mm; bore2=6.35 mm; set screw/clamp envelope"]
standard = "MISUMI"

[[presets]]
id = "CPJC20-6-8"
title = "Jaw coupling D20, 6 to 8 mm"
params = { size = 20, d1 = 6, d2 = 8 }
aliases = ["6x8 jaw coupling", "6 to 8 jaw coupling", "6mm to 8mm jaw coupling", "6-8 jaw coupling", "CPJC20", "D20 jaw coupling", "spider coupling 6x8", "coupling kind=jaw_coupling; bore1=6 mm; bore2=8 mm; set screw/clamp envelope"]
standard = "MISUMI"

[[presets]]
id = "CPJC20-6.35-6.35"
title = "Jaw coupling D20, 6.35 to 6.35 mm"
params = { size = 20, d1 = 6.35, d2 = 6.35 }
aliases = ["6.35x6.35 jaw coupling", "6.35 to 6.35 jaw coupling", "6.35mm to 6.35mm jaw coupling", "6.35-6.35 jaw coupling", "CPJC20", "D20 jaw coupling", "spider coupling 6.35x6.35", "coupling kind=jaw_coupling; bore1=6.35 mm; bore2=6.35 mm; set screw/clamp envelope"]
standard = "MISUMI"

[[presets]]
id = "CPJC20-6.35-8"
title = "Jaw coupling D20, 6.35 to 8 mm"
params = { size = 20, d1 = 6.35, d2 = 8 }
aliases = ["6.35x8 jaw coupling", "6.35 to 8 jaw coupling", "6.35mm to 8mm jaw coupling", "6.35-8 jaw coupling", "CPJC20", "D20 jaw coupling", "spider coupling 6.35x8", "coupling kind=jaw_coupling; bore1=6.35 mm; bore2=8 mm; set screw/clamp envelope"]
standard = "MISUMI"

[[presets]]
id = "CPJC20-8-8"
title = "Jaw coupling D20, 8 to 8 mm"
params = { size = 20, d1 = 8, d2 = 8 }
aliases = ["8x8 jaw coupling", "8 to 8 jaw coupling", "8mm to 8mm jaw coupling", "8-8 jaw coupling", "CPJC20", "D20 jaw coupling", "spider coupling 8x8", "coupling kind=jaw_coupling; bore1=8 mm; bore2=8 mm; set screw/clamp envelope"]
standard = "MISUMI"

[[presets]]
id = "CPJC30-8-10"
title = "Jaw coupling D30, 8 to 10 mm"
params = { size = 30, d1 = 8, d2 = 10 }
aliases = ["8x10 jaw coupling", "8 to 10 jaw coupling", "8mm to 10mm jaw coupling", "8-10 jaw coupling", "CPJC30", "D30 jaw coupling", "spider coupling 8x10", "coupling kind=jaw_coupling; bore1=8 mm; bore2=10 mm; set screw/clamp envelope"]
standard = "MISUMI"

[[presets]]
id = "CPJC30-10-10"
title = "Jaw coupling D30, 10 to 10 mm"
params = { size = 30, d1 = 10, d2 = 10 }
aliases = ["10x10 jaw coupling", "10 to 10 jaw coupling", "10mm to 10mm jaw coupling", "10-10 jaw coupling", "CPJC30", "D30 jaw coupling", "spider coupling 10x10", "coupling kind=jaw_coupling; bore1=10 mm; bore2=10 mm; set screw/clamp envelope"]
standard = "MISUMI"

[[presets]]
id = "CPJC20-5-8-simple"
title = "Jaw coupling D20, 5 to 8 mm, simple"
params = { size = 20, d1 = 5, d2 = 8, detail = "simple" }
aliases = ["CPJC20-5-8 simple"]
standard = "MISUMI"

README.md 12 lines · Markdown

Download

Jaw coupling

A clamping jaw shaft coupling: two hubs and a spacer, three solids. Axis along Z, the first hub's end face on the XY plane, bore d1 in the first hub and bore d2 in the second.

Source

MISUMI Couplings catalogue, Jaw Couplings, Clamping, CPJC table, https://de.misumi-ec.com/files/images/products/docs/flexibleshaftcouplings.pdf, PDF page 20: outside diameter D, length L, hub length l, spacer B, gap C, clamp screw positions F and G, screw M, and the bores offered on each size.

Only bore pairs from one size's list are offered, so 3 to 10 mm isn't a part here, because no size offers both.

Proportions, for looks only: the jaws' width and inner radius, the spacer's shape and the slit's width. The clamp screws themselves aren't modelled, only their holes at nominal M. The spacer shown is the red, Shore A 98 one (table: blue A 80, white A 92, red A 98, polyurethane). MISUMI's 40 mm size has a different hub and isn't here.

# Jaw coupling

A clamping jaw shaft coupling: two hubs and a spacer, three solids. Axis along Z, the first hub's end face on the XY plane, bore d1 in the first hub and bore d2 in the second.

## Source

MISUMI Couplings catalogue, *Jaw Couplings, Clamping*, CPJC table, <https://de.misumi-ec.com/files/images/products/docs/flexibleshaftcouplings.pdf>, PDF page 20: outside diameter D, length L, hub length l, spacer B, gap C, clamp screw positions F and G, screw M, and the bores offered on each size.

Only bore pairs from one size's list are offered, so 3 to 10 mm isn't a part here, because no size offers both.

**Proportions, for looks only:** the jaws' width and inner radius, the spacer's shape and the slit's width. The clamp screws themselves aren't modelled, only their holes at nominal M. The spacer shown is the red, Shore A 98 one (table: blue A 80, white A 92, red A 98, polyurethane). MISUMI's 40 mm size has a different hub and isn't here.

Use this part

STEVE

Open in STEVE

Open it in STEVE The STEVE runtime runs in STEVE: open the part there, or download the code and bundle.

Get the code

curl -o part.py "https://pythonparts.org/p/steve/jaw-coupling/v/1.0.0/raw/part.py"

Raw files, bundle and API

part.py
pypart.toml
README.md
bundle.tar.gzthe package, as published

curl "https://pythonparts.org/api/v1/parts/steve/jaw-coupling/1.0.0"

The version's JSON (parameters, presets, files); add /build?name=value for a build at other values.

About this part

steve104 parts

Profile

Aluminum (generic)Aluminum alloys · Custom finish · 2.7 g/cm³
TPU, Shore 98AElastomers · Custom finish · 1.16 g/cm³

Mass: 18.6 g

At the parameters shown in the viewer, 3 bodies.

License: MIT

Permissive: use, change and sell it; keep the copyright notice.

Runtime: STEVE
Requirements: None stated in the code
Built with: CadQuery 2.9.0.dev0
Published: Nov 5, 2026
Downloads: 0
Builds: 0
Stars: 0
Bundle: e819ea8794de…

#coupling #shaft-coupling #jaw-coupling #spider #power-transmission #metric

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Jaw shaft coupling, clamping type, as two hubs and a spacer, with jaws, slits and clamp screw holes. Sizes and bores from MISUMI's CPJC table. See the README.

Jaw coupling

A clamping jaw shaft coupling: two hubs and a spacer, three solids. Axis along Z, the first hub's end face on the XY plane, bore d1 in the first hub and bore d2 in the second.

Source

Only bore pairs from one size's list are offered, so 3 to 10 mm isn't a part here, because no size offers both.

1.0.0 Latest Nov 5, 2026 · 2 hours ago

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Source

Jaw coupling

Source

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