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Kop-Flex 2 1/2F SB FR
K-F FAST STANDARD
Material
Medium Carbon Steel
Bolt Type
Shrouded
Bore Size Max (in)
2.75 in
Bore Type
Rough Bore
Need help confirming fit? Send us the current part number, shaft size, housing photo, or equipment model.
Product Overview
- All-metal end ring seal design for maximum service life. The industry standard for over 75 years.
- Provides 300% greater lubricant capacity than o-ring style couplings.
- Greater lubricant capacity allows longer periods between scheduled lubrications and longer service life.
- Straight tooth design provides improved load distribution, lower stresses and longer life for the gear teeth.
| Part Number | 2280733 |
| Brand | Kop-Flex |
| Material | Medium Carbon Steel |
| Bolt Type | Shrouded |
| Bore Size Max (in) | 2.75 in |
| Bore Type | Rough Bore |
| Compatible Bore Size [Min] (in) | 0 in |
| Compatible Bore Size Flex Hub [Min] (in) | 0 in |
| Compatible Bore Size Rigid Hub [Min] (in) | 1.375 in |
| Configuration | Flex Rigid |
| Coupling Size | 2.5 |
| Coupling Type | Gear Coupling |
| Fastener Quantity | 10 |
| Fastener Size | 1/2 x 1 5/16 |
| Length Through Bore (in) | 2.9063 in |
| Lube/Non-Lube | Lubricated |
| Max Bore w/standard key for Flex Hub | 2.75 in |
| Measurement System | Imperial |
| Model Name | 1-5-7_FR |
| Outside Diameter (in) | 8.375 in |
| Overall Length (in) | 6 in |
| Rating HP @ 100 RPM | 90 |
| Sleeve Type | Flanged |
| Speed Max (rpm) | 7,900 rpm |
| Style | FASTS |
| Tooth Profile | Straight Faced Involute Hub tooth |
| Torque [Max] (in-lb) | 113,400 in/lbs |
| Torque Rating (in-lb) | 56,700 in/lbs |
Always verify dimensions, load ratings, material, and seal type before ordering.
| Brandi | Kop-Flex |
| Mfg. Catalog Numberi | 2 1/2F SB FR |
| Mfg. Part Numberi | 2280733 |
| GDS #i | GDS-109136 |
| Categoryi | Couplings |
| UPCi | 662384010213 |
