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551.25

Item number:

Description:

Precision couplings with excellent kinematic properties. Stainless Steel Bellows Couplings with Set Screw Hubs.

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

Bore 1
Bore 2
Part #:

Technical Specifications

Coupling Type
Bellows Flex-K
Configuration
Long
Size
25
Material
Aluminium/Stainless Steel
Max Bore B1 (in)
0.551
Max Bore B1 (mm)
14
Min Bore B1 (in)
0.12
Min Bore B1 (mm)
3
Max Bore B2 (in)
0.55
Max Bore B2 (mm)
14
Min Bore B2 (in)
0.12
Min Bore B2 (mm)
3
Angular Compensation, Max (degrees)
1.5
Axial Compensation, Max (in)
0.016
Axial Compensation, Max (mm)
0.4
Axial Stiffness (lbf/in)
62.8
Axial Stiffness (N/mm)
11
Bore Tolerance (in)
+0.0012 / -0.0000
Bore Tolerance (mm)
+0.03 / -0.00
Fastener Screw Size
M4
Fastener Screw Torque (lb-in)
13.3
Fastener Screw Torque (Nm)
1.5
Fastener Wrench Size (mm)
2
Operating Temperature (°C)
-30 to +120
Operating Temperature (°F)
-30 to +248
Peak Torque (lb-in)
17.7
Peak Torque (Nm)
2
Radial Compensation, Max (in)
0.008
Radial Compensation, Max (mm)
0.2
Radial Stiffness (lbf/in)
119.9
Radial Stiffness (N/mm)
21
Resists Axial Load
Yes
Shaft Connection
Set-Screw
Torsional Stiffness (lb-in/rad)
11506
Torsional Stiffness (Nm/rad)
1300
Mass (Weight) (g)
8
Mass (Weight) (oz)
0.28
[D] Outside Diameter (in)
0.98
[D] Outside Diameter (mm)
25
L1 Dimension (in)
0.44
L1 Dimension (mm)
11.3
[L] Length (in)
1.65
[L] Length (mm)
42
[L] Overall Length (in)
1.65
[L] Overall Length (mm)
42
Item Note
Coupling load capacity depends on the operating load cycle. Refer to catalog for further sizing information.
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