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Large jaw couplings are now being offered for bore sizes up to 1-3/4” or 45 mm and torque capacities of 2,655 in-lbs (300 Nm). These new large jaw couplings are designed for use in precision systems with high deceleration and acceleration curves, such as those found in semiconductor, solar, conveyor, and warehouse automation applications.
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Explore More >> Mountable shaft collars with face holes are designed to mate directly with components such as sprockets, pulleys, and metallic plates. Ruland manufactures them with drilled holes for mounting flexibility or threaded holes for the most secure connection between the collar and mated component. They are offered in steel, aluminum, and 303 stainless steel in bore sizes ranging from 3/8” to 2” and 10mm to 50mm.
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| Dimensions | |||
|---|---|---|---|
|
Bore (B1) Larger inner diameter. Should match nominal shaft diameter. |
0.3750 in |
Small Bore (B2) Smaller inner diameter. Should match nominal shaft diameter. |
0.3750 in |
|
B1 Max Shaft Penetration The maximum depth the shaft can penetrate into Bore B1. |
0.695 in |
B2 Max Shaft Penetration The maximum depth the shaft can penetrate into Bore B2. |
0.695 in |
|
Outer Diameter (OD) |
1.125 in (28.6 mm) |
Bore Tolerance Variance in finished bore range before installation. |
+0.001 in / -0.000 in |
|
Length (L) |
1.500 in (38.1 mm) |
Recommended Shaft Tolerance Acceptable variance in nominal shaft diameter before performance loss. |
+0.0000 in / -0.0005 in |
| Fastening Hardware | |||
M4 |
Screw Material |
Alloy Steel |
|
|
Hex Wrench Size Wrench size that fits the screw head to tighten or loosen the screw. |
3.0 mm |
Screw Finish Surface finish and treatments on supplied hardware. |
Black Oxide |
|
Seating Torque Torque required to install supplied hardware. Use torque wrench for accurate seating torque. |
4.6 Nm |
Number of Screws |
2 ea |
| Performance Specifications | |||
|
Dynamic Torque Reversing Max torque when coupling reverses direction without stopping. |
10 lb-in |
Angular Misalignment Max angle of the shaft axes relative to each other. |
3.0° |
|
Dynamic Torque Non-Reversing Max torque for the coupling during quick changes in acceleration or deceleration. |
20 lb-in |
Parallel Misalignment Shafts are parallel to each other, but not in-line with each other. They are offset. |
0.015 in |
40 lb-in |
Axial Motion The amount shafts can move closer to or away from each other. This is meant for thermal expansion of the shafts. No axial force can be placed on the coupling. |
0.010 in |
|
|
Torsional Stiffness Measures the rigidity of the coupling. The more rigid the coupling, the less windup it will have. |
0.140 Deg/lb-in |
Moment of Inertia |
0.0217 lb-in2 |
|
Maximum Speed |
6,000 RPM |
Full Bearing Support Required? Full bearing support is a bearing in close proximity to both sides of the coupling to prevent axial loads that could result in rapid coupling failure. |
Yes |
|
Zero-Backlash? Zero-backlash ensures there is no loss of motion during operation. |
Yes |
Balanced Design The balanced design allows for reduced vibration at high RPMs. |
Yes |
| Recommended Installation Tools | |||
|
Torque Wrench This torque wrench and bit combo is recommended to ensure proper installation. A torque wrench prevents the screw from being over torqued which can lead to product failure. |
Recommended Hex Key This hex key set has the appropriate hex key for product installation. Trained and experienced assemblers can use a hex key in place of a torque wrench. |
||
| Additional Information | |||
|
Material Specification |
7075-T651 Extruded and Drawn Aluminum Bar |
Temperature Minimum and maximum operating temperature. Operating temperature includes ambient temperature plus or minus factors such as system heat generated during operation, washdown, vacuum, etc... |
-40°F to 225°F (-40°C to 107°C) |
Bright, No Plating |
Manufacturer |
Ruland Manufacturing |
|
|
Country of Origin |
USA |
Weight (lbs) |
0.110600 |
|
UPC |
634529032688 |
Tariff Code |
8483.60.8000 |
|
UNSPC Code used to identify products to standardize nomenclature around the world. |
31163003 |
||
| Product Notes | |||
|
Note 1 |
Torque ratings are at maximum misalignment. |
Note 2 |
Performance ratings are for guidance only. The user must determine suitability for a particular application. |
|
Note 3 |
Torque ratings for the couplings are based on the physical limitations/failure point of the machined beams. Under normal/typical conditions the hubs are capable of holding up to the rated torque of the machined beams. In some cases, especially when the smallest standard bores are used or where shafts are undersized, slippage on the shaft is possible below the rated torque of the machined beams. Please consult technical support for more assistance. |
|
|
| CERTIFICATIONS/STANDARDS | |||
|---|---|---|---|
| ISO 9001:2015 | Conflict Minerals | ||
| RoHS3 | REACH | ||
WARNING This product can expose you to the chemical Ethylene Thiourea, known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to 
