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Gearmotors: What They Are and How to Size a Replacement
Many industrial loads need torque an electric motor can’t deliver on its own, at a
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Torrington JH-1812 drawn cup needle roller bearing, caged, open ends, 1-1/8 in bore x 1-1/2 in OD x 3/4 in wide. Now made by Koyo as JH-1812. Two pieces.
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| MFR / Brand | Torrington |
|---|---|
| MPN | JH-1812 |
| Model | JH-1812 |
| Bearing Type | Needle Roller Bearing |
| ID | 1.1250 in (28.575 mm) |
| OD | 1.5000 in (38.100 mm) |
| Width | 0.750 in (19.05 mm) |
| Mpn Variants | JH-1812, JH1812, JH 1812 |
|---|---|
| Compatible With Replaces | Koyo JH-1812 (current production of the Torrington design) |
| Additional Attributes | Koyo JH-1812 data: Y max 1.27 mm; fatigue load limit Cu 4.75 kN; mounting inner ring IR-1416; caged rollers, open ends |
| Dynamic Load Rating | 23,350 N |
| Static Load Rating | 31,320 N |
| Item Weight | 0.046 kg (0.10 lb) |
| Limiting Speed | 7,600 rpm grease; 12,000 rpm oil |
| Design Units | Inch |
| Closure Type | Open |
| Cross Reference 1 | Koyo JH-1812 |
|---|---|
| Cross Reference 2 | INA SCH1812 |
Torrington JH-1812 inch drawn cup needle roller bearing, caged, open ends. Two pieces. Unit Quantity: 2 Pcs. Torrington’s needle roller line is now made by Koyo (JTEKT) under the same JH-1812 designation. Country of Origin: United States.
J — inch drawn cup needle roller bearing with caged rollers.
H — larger-roller series: more capacity than the standard J series on the same shaft size.
18 — shaft diameter in sixteenths of an inch: 18/16 = 1-1/8 in.
12 — width in sixteenths of an inch: 12/16 = 3/4 in.
Bore Diameter: 1.1250 in (28.575 mm). Outside Diameter: 1.5000 in (38.100 mm). Overall Width: 0.750 in (19.05 mm). Rolling Elements: Needle Roller. Closure Type: Open. Dynamic Load Rating: 23,350 N. Static Load Rating: 31,320 N. Limiting Speed: 7,600 rpm grease; 12,000 rpm oil. Item Weight: 0.046 kg (0.10 lb). Unit Quantity: 2 Pcs.
Roller bore (Fw): 28.575 mm. Cup outside diameter: 38.100 mm. Y max: 1.27 mm. Fatigue load limit Cu: 4.75 kN. Related part: IR-1416 inner ring.
Same 1-1/8 x 1-1/2 x 3/4 in caged, open-end drawn cup envelope: Koyo JH-1812, INA SCH1812. Searchable forms of the number: JH-1812, JH1812, JH 1812.
Roller bore 1-1/8 in (28.575 mm), outside diameter 1-1/2 in (38.100 mm), width 3/4 in (19.05 mm).
Dynamic Load Rating: 23,350 N. Static Load Rating: 31,320 N.
Koyo (JTEKT) makes the needle roller line formerly made by Torrington, under the same JH-1812 designation.
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