| Shaft Locking Type - Couplings | 1 Piece Set Screw |
| Item | Motion Control Coupling Hub |
| System of Measurement | Inch |
| Bore Dia. | 1/2 in |
| Outside Dia. | 1.313 in |
| With Keyway / Without Keyway | Without Keyway |
| Finish | Black Anodized |
| Max. Bore (In.) | 0.5 in |
| Material - Hubs | Aluminum |
| Clearance Dia. (In.) | 1.313 in |
| Length through Bore (mm) | 15 mm |
| Overall Length (mm) | 15 mm |
| Size | OST21 |
| Max. RPM | 4,500 RPM |
| Max. Temp. Range (F) | Acetal Disk 150 Degrees F, Nylon Disk 130 Degrees F |
| Clearance Dia. (mm) | 33.3 mm |
| Setscrew Location | 2 (90 Degrees ) |
| Screw Type | Set Screw |
| Screw Size (mm) | M5 |
| Overall Length (In.) | 0.59 in |
| Item - Oldham Coupling Hubs | Oldham Coupling Hub |
| Length through Bore (In.) | 0.59 in |
| Assembled Coupling Length | 1.88 in |
| Standards | Conflict Minerals Compliant, ISO 9001:2015, REACH Compliant, RoHS3 Compliant |
| Keyway Width | Not Applicable |
| Length through Bore | 0.59 in |
| Screw Seating Torque | 19.5 in-lb |
| Screw Material | Alloy Steel |
| Bore Tolerance | +0.001 in / -0.000 in |
| Over-Standard Parallel Misalignment | 0.131 in |
| Shaft Locking Type | Set Screw |
| Angular Misalignment | 0.5 Degrees |
| Zero Backlash | Yes |
| Outside Diameter | 1.313 in |
| Bore Type | Round |
| Hub Material Grade | 2024 |
| Set Screw Location | 90 Degrees Apart |
| Features | Balanced Design |
| Keyway Depth | Not Applicable |
| Full Bearing Support Required | Yes |
| Axial Motion | 0.006 in |
| Bore Diameter | 1/2 in |
| Coupling Size | OST21 |
| Coupling Overall Length | 1.875 in |
| Maximum Speed | 4,500 RPM |
| Screw Thread Size | M4 |
| Maximum Operating Temperature | 200 Degrees F |
| Compatible Center Element Manufacturer Part Number | OD21/33-AT, OD21/33-NL, OD21/33-PEK |
| Number of Locking Screws | 2 |
| Shaft Tolerance | +0.000 mm / -0.013 mm |
| Hub Material | Aluminum |
| Included Screws | (2) Set Screw |
| Screw Material Finish | Black Oxide |
| Hub Material Finish | Black Anodized |
| Weight | 0.076 lb |
| Parallel Misalignment | 0.008 in |
| For Misalignment Type | Angular, Axial, Parallel |
| Minimum Operating Temperature | -10 Degrees F |
| Mechanical Fuse Break | Yes |
| Country of Origin (subject to change) | United States |
| Package Quantity | 1 |
Coupling Hub, Oldham Set Screw, 1/2in., RULAND, Mfr# OST21-8-A
$20,99
-3% / ea
with subscription
Free shipping will be applied on orders over $50
Motion Control Coupling Hub, Angular Misalignment 0.5 Degrees , Axial Motion 0.006 in, Coupling Size OST21, Outside Diameter 1.313 in, Over-Standard Parallel Misalignment 0.131 in, Parallel Misalignment 0.008 in, Coupling Overall Length 1.875 in, Hub Material Aluminum, Length through Bore 0.59 in, System of Measurement Inch, Bore Diameter 1/2 in, Maximum Speed 4,500 RPM, Bore Type Round, Shaft Locking Type Set Screw, Keyway Depth Not Applicable, Keyway Width Not Applicable
9999 in stock
Must order in multiples of 1
Subtotal:
$20.99
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