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Designation
Elastomer Dog Coupling
Size
12,5
Version 1
clamping with grub screw
Version 2
mini
Body material
aluminium
CTS=Stat.tors. resist. Nm/arcm
0,038
D1/D2=Fastening hole
8
D4=Outside diameter
30
L=Length
35
MA=Tightening torque (Nm)
1,7
MN=Nominal torque Nm
12,5
Mt=Inertia moment (10⁻³ kgm²)
0,0059
S2=Max. axial shaft displaceme
1
S=Max. lateral shaft displacem
0,1
C (DIN 916)
M04
D1/D2
8
D1/D2 max.
14
D1/D2 min.
8
L1
11
L2
13
L3
5,5

Description

Material
Spider polyurethane hardness Shore 98A.
Hub aluminium.
Version
Bright.
Note
Clamping the hub with a grub screw is a cost-effective alternative to the elastomer dog couplings with radial clamping hub (23022). Short mounting times.
The couplings can be mounted completely assembled or plug-in mounting is also possible. Lightly oil the spider to ease assembly. Take note of the required tightening torque for the grub screw. To ease removal we recommend milling a flat on the shaft.
Assembly
The shaft to hub bore fit is a transition fit. The play should be min. 0.01 mm and max. 0.04 mm i.e.
shaft: Ø 6 f7
hub: Ø 6 H8.
Bores smaller than D1/D2 min. are possible, however an optimal transfer of the couplings nominal torque is no longer guaranteed.
On request
Hub bores D1 and D2 with separate tolerance class or range.
Drawing reference
1) elastomer spider
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