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864.25

Item number:

Description:

Oldham couplings are easy to use 3-part couplings utilizing wear discs providing generous radial compensation. The discs are the sacrificial elements and are replaceable at low cost in the event of wear or breakage. The 4 hub styles and 2 disc materials that comprise the range are fully interchangeable within each of the 9 sizes available. This part is a complete coupling consisting of two hubs and one acetal disc.

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

Bore 1
Bore 2
Part #:

Technical Specifications

Coupling Type
Oldham Coupling
Configuration
Thro Bore
Size
25
Material
Stainless Steel
Max Bore B1 (in)
0.472
Max Bore B1 (mm)
12
Min Bore B1 (in)
0.236
Min Bore B1 (mm)
6
Max Bore B2 (in)
0.472
Max Bore B2 (mm)
12
Min Bore B2 (in)
0.236
Min Bore B2 (mm)
6
Angular Compensation, Max (degrees)
0.5
Axial Compensation, Max (in)
+/- 0.004
Axial Compensation, Max (mm)
+/- 0.10
Bore Tolerance (in)
+0.0012 / -0.0000
Bore Tolerance (mm)
+0.03 / -0.00
Fastener Screw Size
M5
Fastener Screw Torque (lb-in)
18.6
Fastener Screw Torque (Nm)
2.1
Fastener Wrench Size (mm)
2.5
Max Speed (rpm)
3000
Operating Temperature (°C)
-20 to +60
Operating Temperature (°F)
-20 to +140
Peak Torque (lb-in)
35.4
Peak Torque (Nm)
4
Radial Compensation, Max (in)
0.008
Radial Compensation, Max (mm)
0.2
Resists Axial Load
No
Shaft Connection
Set-Screw
Static Break Torque (lb-in)
115
Static Break Torque (Nm)
13
Torsional Rate (deg/lb-in)
0.032
Torsional Rate (deg/Nm)
0.28
Torsional Stiffness (lb-in/rad)
1814
Torsional Stiffness (Nm/rad)
205
Mass (Weight) (g)
76
Mass (Weight) (oz)
2.7
[D] Outside Diameter (in)
1
[D] Outside Diameter (mm)
25.4
L1 Dimension (in)
0.46
L1 Dimension (mm)
11.6
L2 Dimension (in)
0.36
L2 Dimension (mm)
9.2
[L] Assembled Length (in)
1.28
[L] Assembled Length (mm)
32.4
Item Note
Coupling load capacity depends on the operating load cycle. Refer to catalog for further sizing information.
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