MJCC70-25-A JD44/70-92Y JC44-12-A
PRODUCT SPECIFICATIONS
PRODUCT SPECIFICATIONS
| Dimensions | |||
|---|---|---|---|
|
Bore (B1) |
25 mm |
Keyway (K) |
8 mm |
|
B1 Max Shaft Penetration |
33.0 mm |
Outer Diameter (OD) |
2.750 in (69.9 mm) |
|
Bore Tolerance |
+0.03 mm / -0.00 mm |
Hub Width (LH) |
33.0 mm |
|
Length (L) |
3.674 in (93.3 mm) |
Recommended Shaft Tolerance |
+0.000 mm / -0.013 mm |
| Fastening Hardware | |||
|
Forged Clamp Screw |
M8 |
Number of Screws |
1 ea |
|
Screw Material |
Alloy Steel |
Screw Finish |
Black Oxide |
|
Hex Wrench Size |
6.0 mm |
Seating Torque |
39 Nm |
| Performance Specifications | |||
|
Torque Specifications |
Torque ratings vary with insert selection |
Misalignment |
Misalignment ratings vary with insert selection |
|
Maximum Speed |
8,000 RPM |
Moment of Inertia |
2.328-4 kg-m2 |
|
Full Bearing Support Required? |
Yes |
Recommended Inserts |
|
|
Zero-Backlash? |
Yes |
Balanced Design |
Yes |
|
Fail Safe? |
Yes |
||
| Additional Information | |||
|
Weight (lbs) |
0.717870 |
Temperature |
-10°F to 180°F (-23°C to 82°C) |
|
Material Specification |
2024-T351 Aluminum Bar |
Finish |
Bright |
|
Finish Specification |
Bright, No Plating |
Manufacturer |
Ruland Manufacturing |
|
Country of Origin |
USA |
UPC |
65432940700 |
|
UNSPC |
31163011 |
Tariff Code |
8483.60.8000 |
| Product Notes | |||
|
Note 1 |
Stainless steel hubs are available upon request. |
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 spiders. Under normal/typical conditions the hubs are capable of holding up to the nominal torque of the spiders. Please consult technical support for more assistance. |
||
| Dimensions | |||
|---|---|---|---|
|
Outer Diameter (OD) |
2.750 in (69.9 mm) |
||
| Performance Specifications | |||
|
Rated Torque |
300 in-lb (33.9 Nm) |
Angular Misalignment |
0.9° |
|
Peak Torque |
600 in-lb (67.79 Nm) |
Parallel Misalignment |
0.008 in (0.20 mm) |
|
Torsional Stiffness |
500 lb-in/Deg (56.49 Nm/Deg) |
Moment of Inertia |
0.113995 lb-in2 (3.336 X 10-5 kg-m2) |
|
Axial Motion |
0.060 in (1.52 mm) |
Maximum Speed |
8,000 RPM |
|
Full Bearing Support Required? |
Yes |
Zero-Backlash? |
Yes |
|
Approximate Assembly Force (lbf) |
140 lbf |
Bearing Load at Max Parallel Misalignment (lbf) |
65 lbf |
| Additional Information | |||
|
Weight (lbs) |
0.128900 |
Temperature |
-10°F to 180°F (-23°C to 82°C) |
|
Material Specification |
Polyurethane 92 Shore A YELLOW |
Finish Specification |
Plain |
|
Manufacturer |
Ruland Manufacturing |
UPC |
634529409077 |
|
Country of Origin |
USA |
Tariff Code |
8483.60.8000 |
|
UNSPC |
31163011 |
||
| Product Notes | |||
|
Note 1 |
Performance ratings are for guidance only. The user must determine suitability for a particular application. |
Note 2 |
Torque ratings for the couplings are based on the physical limitations/failure point of the spiders. Under normal/typical conditions the hubs are capable of holding up to the nominal torque of the spiders. In some cases especially when the smallest standard bores are used or where shafts are undersized slippage on the shaft is possible below the nominal torque of the spiders. Keyways are available to provide additional torque capacity in the shaft/hub connection when required. Please consult technical support for more assistance. |
| Dimensions | |||
|---|---|---|---|
|
Bore (B1) |
0.7500 in |
B1 Max Shaft Penetration |
1.300 in |
|
Outer Diameter (OD) |
2.750 in (69.9 mm) |
Bore Tolerance |
+0.001 in / -0.000 in |
|
Hub Width (LH) |
1.300 in |
Length (L) |
3.674 in (93.3 mm) |
|
Recommended Shaft Tolerance |
+0.0000 in / -0.0005 in |
||
| Fastening Hardware | |||
|
Forged Clamp Screw |
M8 |
Number of Screws |
1 ea |
|
Screw Material |
Alloy Steel |
Screw Finish |
Black Oxide |
|
Hex Wrench Size |
6.0 mm |
Seating Torque |
39 Nm |
| Performance Specifications | |||
|
Torque Specifications |
Torque ratings vary with insert selection |
Misalignment |
Misalignment ratings vary with insert selection |
|
Maximum Speed |
8,000 RPM |
Moment of Inertia |
0.806 lb-in2 |
|
Full Bearing Support Required? |
Yes |
Recommended Inserts |
|
|
Zero-Backlash? |
Yes |
Balanced Design |
Yes |
|
Fail Safe? |
Yes |
||
| Additional Information | |||
|
Weight (lbs) |
0.732200 |
Temperature |
-10°F to 180°F (-23°C to 82°C) |
|
Material Specification |
2024-T351 Aluminum Bar |
Finish |
Bright |
|
Finish Specification |
Bright, No Plating |
Manufacturer |
Ruland Manufacturing |
|
Recommended Gap Between Hubs |
0.074 in (1.88 mm) |
Country of Origin |
USA |
|
UPC |
65432939425 |
UNSPC |
31163011 |
|
Tariff Code |
8483.60.8000 |
||
| Product Notes | |||
|
Note 1 |
Stainless steel hubs are available upon request. |
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 spiders. Under normal/typical conditions the hubs are capable of holding up to the nominal torque of the spiders. Please consult technical support for more assistance. |
Prop 65 |
|
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 
