On request
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MARTIN SPROCKET & GEAR
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MARTIN SPROCKET & GEAR 25NB19H 1/2
#25NB19H 1/2
On request
Idler Roller Chain Sprocket - Steel Material, 25 Chain, 0.2500 in Pitch, 0.6250 in Bore, 19 Teeth, Hardened Teeth, 1.2290 in Hub Diameter
Price on request — a consultant will confirm lead time and terms.
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MARTIN SPROCKET & GEAR — MARTIN SPROCKET & GEAR 25NB19H 1/2
- Martin idlers are smooth-running and available in oil-impregnated, sintered bronze, extra-duty bearing press-fitted in sprocket and a hardened steel journal case for maximum resistance to wear.
- Steel sprockets used in Martin idlers are accurately machined (not stamped) the same as sprockets normally supplied for power transmission use.
- Martin can also alter existing sprockets and install bearings to make custom idlers.
- Can be used to change the direction of chain motion or to adjust chain tension
Specifications
| Brand | MARTIN SPROCKET & GEAR |
| Category | IDLER ROLLER CHAIN SPROCKETS |
| Bore diameter | 0.625 in |
| Hub diameter | 1.229 in |
| Number of teeth | 19 |
| Chain roller diameter | 0.13 in |
| Pitch | 0.25 in |
| Chain roller width | 0.125 in |
| Outside diameter | 1.648 in |
| Caliper diameter | 1.38 in |
| Length through bore | 0.75 in |
| Tooth thickness | 0.11 in |
| Sprocket material | Steel |
| Surface treatment | Protective Coating |
| Chain number | 25 |
| Storage dimension height | 0.8125 in |
| Chain number & pitch | 25 / 1/4 in |
| Storage dimension width | 1.9375 in |
| Chain / sprocket type | Idler |
| Storage dimension length | 1.9375 in |
| Bearing type | Needle Bearing |
| Additional details | Chain Tightener Part #E5006 |
| Bore type | Bearing |
| Includes | Chain Tightener Part #E5006 |
| Hardened teeth | Hardened Teeth |
| Weight | 0.2 lbs |
| Number of strands across | 1 |
| Manufacturer upc number | 697950340739 |
| Pitch diameter | 1.518 in |
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