FREE delivery on orders over €150
Product Specifications:
| Item | Oldham Coupling Hub |
| Angular Misalignment | 0.5° |
| Axial Motion | 0.006" |
| B1 Maximum Shaft Penetration | 0.59" |
| Balanced Design | Yes |
| Bore (b1) | 0.3125" |
| Bore Tolerance | -0" to +0.001" |
| Finish | Bright |
| Finish Specification | Bright, No Plating |
| Forged Set Screw | M4 |
| Full Bearing Support Required | Yes |
| Hex Wrench Size | 2 mm |
| Hub Width (lh) | 0.59" |
| Length (l) | 1.875" |
| Material Specification | Type 303 Austenitic, Non-Magnetic Bar |
| Max Parallel Misalignment | 0.131" |
| Max. Speed | 4500 RPM |
| Mechanical Fuse | Yes |
| Moment Of Inertia | 0.0555 lbs.-in. |
| Number Of Screws | 2 EA 90° Apart |
| Outer Diameter | 1.313" |
| Parallel Misalignment | 0.008" |
| Recommended Inserts | OD21/33-AT |
| Recommended Shaft Tolerance | -0.0005" to 0" |
| Screw Finish | Bright |
| Screw Material | Stainless Steel |
| Seating Torque | 1.76 N-m |
| Temperature | Acetal Disk -10°F to 150°F (-23°C to 65°) |
| Torque Specifications | Torque Ratings Vary With Insert Selection |
| Zero-backlash | Yes |
Shipping Info:
| Ship weight (kg) | 0.11 |
| Ship height (cm) | 3.34 |
| Ship length (cm) | 4.76 |
| Ship width (cm) | 3.34 |
| Country of Origin | US |
Product Variants
| Model | Coupling Size | Length Through Bore | Outside Dia. | Bore Dia. | Coupling Overall Length | Overall Length | Max. Speed | Hub Material | Price | |
|---|---|---|---|---|---|---|---|---|---|---|
| OST21-10-A | Ost21 | 0.59" | 33.3 mm | 5/8" | 1.875" | 15 mm | 4500 RPM | Aluminum | €60.15 | |
| OST21-5-A | Ost21 | 0.59" | 33.3 mm | 0.312" | 1.875" | 15 mm | 4500 RPM | Aluminum | €60.15 | |
| OST21-6-A | Ost21 | 0.59" | 33.3 mm | 3/8" | 1.875" | 15 mm | 4500 RPM | Aluminum | €60.15 | |
| OST21-8-A | Ost21 | 0.59" | 33.3 mm | 1/2" | 1.875" | 15 mm | 4500 RPM | Aluminum | €60.15 | |
| OST26-10-A | Ost26 | 0.71" | 41.3 mm | 5/8" | 2" | 18 mm | 4500 RPM | Aluminum | €72.89 | |
| OST26-12-A | Ost26 | 0.71" | 41.3 mm | 3/4" | 2" | 18 mm | 4500 RPM | Aluminum | €72.89 | |
| OST26-6-A | Ost26 | 0.71" | 41.3 mm | 3/8" | 2" | 18 mm | 4500 RPM | Aluminum | €72.89 |
Explore More
- CHATILLON
- INFICON
- JOHNSON
- KEYSHAFT
- SE-KURE
- Non-Adhesive Material Cutter Accessories
- Handheld and Canister Vacuum Cleaners
- Leveling Rods and Tripods
- Vacuum Cleaner Accessory Kits
- Dual Wheel Casters
- AKRO-MILS 30280 Akrobins Super Size Bins
- DWYER INSTRUMENTS STC Series Pipe-Mount Bimetal Surface Thermometers
- AKRO-MILS 33228 Akro Grid Dividable Plastic Storage Boxes
- WELLS LAMONT Para Aramid Sleeves with Cotton Lining
- BURNDY GRC Type Mechanical Ground Rod Clamps
- GOODYEAR ENGINEERED PRODUCTS F Cam And Groove Coupling, With Locking Arms, Female Coupler x MNPT, Aluminium
- PASS AND SEYMOUR Tamper Resistant Decorator Duplex Receptacles
- MARTIN SPROCKET TBF Type Roller Chain Couplings
- BALDOR / DODGE Split Tire, 5HCB, Elastomeric Couplings
- 3M 236U Xtract Paper Discs
Contact us
Contact your account manager right away to get personal advice.
We're available Monday through Friday, from 07:30 until 17:00.
RULAND MANUFACTURING OST21-5-SS 5/16 Inch Oldham Coupling Hub, 303 SS, Set Screw Style, 1.313 Inch OD, 0.590 Inch Lg.
€96.49 /unit

