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815.20

Item number:

Description:

Flexible Jaw Couplings utilize the flexibility and resiliance of a polyurthane element between aluminium hubs. This combination allows high torque to be transmitted with little or no backlash, even where there is significant angular and/or parallel misalignment. This part is the complete coupling consisting of two hubs and a Red element.

Select bore(s) before adding to cart (prices will change if keyways are selected).

Bore 1
Bore 2
Part #:

Technical Specifications

Coupling Type
Flex-G Coupling with hard element
Configuration
Thro Bore
Size
20
Material
Aluminium
Max Bore B1 (in)
0.354
Max Bore B1 (mm)
9
Min Bore B1 (in)
0.157
Min Bore B1 (mm)
4
Max Bore B2 (in)
0.354
Max Bore B2 (mm)
9
Min Bore B2 (in)
0.157
Min Bore B2 (mm)
4
Angular Compensation, Max (degrees)
2
Axial Compensation, Max (in)
0.004
Axial Compensation, Max (mm)
0.1
Backlash Free Torque (lb-in)
4
Backlash Free Torque (Nm)
0.45
Bore Tolerance (in)
+0.0012 / -0.0000
Bore Tolerance (mm)
+0.03 / -0.00
Fastener Screw Size
M3
Fastener Screw Torque (lb-in)
8.32
Fastener Screw Torque (Nm)
0.94
Fastener Wrench Size (mm)
1.5
Max Speed (rpm)
28000
Operating Temperature (°C)
-40 to +100
Operating Temperature (°F)
-40 to +212
Radial Compensation, Max (in)
0.006
Radial Compensation, Max (mm)
0.15
Resists Axial Load
No
Shaft Connection
Set-Screw
Torque, Max (lb-in)
89
Torque, Max (Nm)
9.7
Torque, Nominal (lb-in)
44
Torque, Nominal (Nm)
4.9
Torsional Rate (deg/lb-in)
0.14
Torsional Rate (deg/Nm)
1.22
Torsional Stiffness (lb-in/rad)
416
Torsional Stiffness (Nm/rad)
47
Mass (Weight) (g)
17
Mass (Weight) (oz)
0.6
[D] Outside Diameter (in)
0.79
[D] Outside Diameter (mm)
20
L1 Dimension (in)
0.39
L1 Dimension (mm)
10
L2 Dimension (in)
0.39
L2 Dimension (mm)
10
[L] Assembled Length (in)
1.18
[L] Assembled Length (mm)
30
Item Note
Coupling load capacity depends on the operating load cycle. Refer to catalog for further sizing information.
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