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RULAND MANUFACTURING BC21-8-8-A 1/2 x 1/2 Inch Bellows Coupling, High Stiffness, Aluminum, 1.313 Inch, OD 1.700 Inch Lg.
Item: AF9WEZModel: BC21-8-8-ACross Ref: 30VE98
7 In Stock
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€250.86 /unit
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Product Specifications:
| Item | Motion Control Coupling |
| Angular Misalignment | 1.5° |
| Application | Encoders, Stepper / Servo |
| Axial Motion | 0.016" |
| Bellows Material | Stainless Steel |
| Bellows Material Grade | Grade Mil-A-8625 Type II, Class 2 And ASTM B580 Type B |
| Bore Dia. | 1/2" x 1/2" |
| Bore Diameter 1 | 1/2" |
| Bore Diameter 2 | 1/2" |
| Bore Tolerance | -0" to +0.001" |
| Bore Type | Round |
| Clearance Dia. | 33.3 mm |
| Coupling Outside Diameter | 1.31" |
| Different Bore Sizes | No |
| Dynamic Torque Non-reversing | 60 lbs.-in. |
| Dynamic Torque Reversing | 30 lbs.-in. |
| Fastener Tightening Torque | 18.6 lbs.-in. |
| Features | Balanced Design For Reduced Vibration, Lightweight And Has Low Inertia, Zero Backlash |
| Finish | Black Anodized |
| For Misalignment Type | Angular, Axial, Parallel |
| Full Bearing Support Required | Yes |
| Hub Length | 0.59" |
| Hub Material | Aluminum |
| Hub Material Finish | Sulfuric Anodized Mil-A-8625 Type Ii, Class 2 And Astm B580 Type B Black Anodize |
| Hub Material Grade | Grade 2024 |
| Included Screws | (2) Hex Socket Cap Screw |
| Length Through Bore | 20.5 mm |
| Length Through Bore 1 | 0.8" |
| Length Through Bore 2 | 0.8" |
| Material | Aluminum |
| Max. Angular Misalignment | 1.5° |
| Max. Bore Dia. | 1/2" |
| Max. Parallel Misalignment | 0.006" |
| Max. Speed | 10000 RPM |
| Max. Temp. Range | 200°F |
| Maximum Operating Temperature | 200°F |
| Minimum Operating Temperature | -40°F |
| Moment Of Inertia | 0.036873 lbs.-sq. in. |
| Number Of Locking Screws | 2 |
| Outside Dia. | 33.3 mm |
| Overall Length | 1.7" |
| Parallel Misalignment | 0.006" |
| Rated Torque | 120 lbs.-in. |
| Screw Material | Alloy Steel |
| Screw Material Finish | Black Oxide |
| Screw Thread Size | M3 |
| Screw Type | Cap Screw |
| Shaft Locking Type | Clamp On |
| Shaft Tolerance | -0.0005" to 0" |
| Size | BC21 |
| Style | Bellows Clamp |
| System Of Measurement | Imperial |
| Torque | 120 lbs.-in. |
| Torsional Stiffness | 400 lbs.-in./deg. |
| Zero Backlash | Yes |
Shipping Info:
| Ship weight (kg) | 0.07 |
| Ship height (cm) | 3.56 |
| Ship length (cm) | 4.32 |
| Ship width (cm) | 10.16 |
| HS code | 8483608000 |
| Country of Origin | US |
Product Variants
| Model | Overall Length | Torsional Stiffness | Different Bore Sizes | Rated Torque | Axial Motion | Parallel Misalignment | Bore Dia. 1 | Bore Dia. 2 | Price | |
|---|---|---|---|---|---|---|---|---|---|---|
| BC10-2-2-A | 1.08" | 72 lbs.-in./deg. | No | 22 lbs.-in. | 0.008" | 0.004" | - | - | €261.17 | |
| BC10-3-2-A | 1.08" | 72 lbs.-in./deg. | Yes | 22 lbs.-in. | 0.008" | 0.004" | - | - | €261.17 | |
| BC10-3-3-A | 1.08" | 72 lbs.-in./deg. | No | 22 lbs.-in. | 0.008" | 0.004" | - | - | €269.54 | |
| BC10-4-2-A | 1.08" | 72 lbs.-in./deg. | Yes | 22 lbs.-in. | 0.008" | 0.004" | - | - | €261.17 | |
| BC10-4-3-A | 1.08" | 72 lbs.-in./deg. | Yes | 22 lbs.-in. | 0.008" | 0.004" | - | - | €261.17 | |
| BC10-4-4-A | 1.08" | 72 lbs.-in./deg. | No | 22 lbs.-in. | 0.008" | 0.004" | - | - | €253.74 | |
| BC12-3-3-A | 1.19" | 120 lbs.-in./deg. | No | 40 lbs.-in. | 0.01" | 0.004" | - | - | €256.74 |
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RULAND MANUFACTURING BC21-8-8-A 1/2 x 1/2 Inch Bellows Coupling, High Stiffness, Aluminum, 1.313 Inch, OD 1.700 Inch Lg.
€278.72 /unit