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Product Specifications:
| Item | Disc Coupling |
| Angular Misalignment | 2° |
| Application | Encoders, Stepper / Servo |
| Axial Motion | 0.03" |
| Bore Dia. 1 | 1 3/4" |
| Bore Dia. 2 | 1 3/4" |
| Bore Tolerance | 0" to 0.001" |
| Bore Type | Round |
| Center Spacer Material | Aluminum |
| Coupling Outside Dia. | 3 1/8" |
| Different Bore Sizes | No |
| Disc Material | Stainless Steel |
| Disc Material Finish | Plain |
| Disc Material Grade | Grade 302 |
| Dynamic Torque Non-reversing | 575 lbs.-in. |
| Dynamic Torque Reversing | 287.5 lbs.-in. |
| Fastener Tightening Torque | 39 N-m |
| Features | Balanced Design For High RPM, Constant Velocity, High Torque, High Torsional Stiffness, Long Life, Low Inertia, No Maintenance |
| For Misalignment Type | Angular, Axial, Parallel |
| Full Bearing Support Required | Yes |
| Hub Length | 1 2/5" |
| Hub Material | Aluminum |
| Hub Material Finish | Anodized |
| Hub Material Grade | 2024 |
| Included Screws | (2) Hex Cap Screw |
| Length Through Bore 1 | 1.4" |
| Length Through Bore 2 | 1.4" |
| Max. Operating Temp. | 200°F |
| Max. Speed | 10000 RPM |
| Minimum Operating Temperature | -10°F |
| Moment Of Inertia | 2.953 lbs.-sq. in. |
| Number Of Discs | 2 |
| Number Of Locking Screws | 2 |
| Overall Length | 3 63/64" |
| Parallel Misalignment | 0.012" |
| Rated Torque | 1150 lbs.-in. |
| Screw Length | 20 mm |
| Screw Material | Alloy Steel |
| Screw Material Finish | Black Oxide |
| Screw Thread Size | M8 |
| Shaft Locking Type | Clamp On |
| Shaft Tolerance | -0.0005" to 0" |
| System Of Measurement | Imperial |
| Torsional Stiffness | 2500 lbs.-in./deg. |
| Zero Backlash | Yes |
Shipping Info:
| Ship weight (kg) | 0.78 |
| Ship height (cm) | 7.94 |
| Ship length (cm) | 10 |
| Ship width (cm) | 10 |
| Country of Origin | US |
Product Variants
| Model | Torsional Stiffness | Axial Motion | Parallel Misalignment | Overall Length | Different Bore Sizes | Rated Torque | Bore Dia. 1 | Bore Dia. 2 | Price | |
|---|---|---|---|---|---|---|---|---|---|---|
| DCD12-3-3-A | 51 lbs.-in./deg. | 0.008" | 0.004" | 1 3/16" | No | 25 lbs.-in. | - | - | €171.56 | |
| DCD12-4-3-A | 51 lbs.-in./deg. | 0.008" | 0.004" | 1 3/16" | Yes | 25 lbs.-in. | - | - | €171.56 | |
| DCD12-4-4-A | 51 lbs.-in./deg. | 0.008" | 0.004" | 1 3/16" | No | 25 lbs.-in. | - | - | €163.46 | |
| DCD12-5-3-A | 51 lbs.-in./deg. | 0.008" | 0.004" | 1 3/16" | Yes | 25 lbs.-in. | - | - | €171.56 | |
| DCD12-5-4-A | 51 lbs.-in./deg. | 0.008" | 0.004" | 1 3/16" | Yes | 25 lbs.-in. | - | - | €171.56 | |
| DCD12-5-5-A | 51 lbs.-in./deg. | 0.008" | 0.004" | 1 3/16" | No | 25 lbs.-in. | - | - | €171.56 | |
| DCD16-4-4-A | 61 lbs.-in./deg. | 0.012" | 0.006" | 1 3/8" | No | 50 lbs.-in. | - | - | €190.37 |
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RULAND MANUFACTURING DCD50-28-28-A 1 3/4 x 1 3/4 Inch Double Disc Coupling, Aluminum, Clamp Style, 3.125 Inch OD, 3.938 Inch Lg.
€491.76 /unit

