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Complete Units
Kop-Flex 3F SB FF FB
K-F FAST STANDARD
Material
Medium Carbon Steel
Bolt Circle
8 in
Bolt Type
Shrouded
Bore Size Max (in)
3.13 in
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.
- Material
- Medium Carbon Steel
- Bolt Circle
- 8 in
- Bolt Type
- Shrouded
- Bore Size Max (in)
- 3.13 in
- Bore Type
- Finished Bore
- Compatible Bore Size [Min] (in)
- 0 in
- Configuration
- Full Flex
- Coupling Size
- 3
- Coupling Type
- Gear Coupling
- Fastener Quantity
- 12
- Fastener Size
- 1/2 x 1 5/16
- Features
- Shrouded Bolt / Full Flex / Finish Bored Coupling
- Hub Diameter (in)
- 4.25 in
- Includes
- Hubs (2) Sleeves (2) Seals (2)
- Length Through Bore (in)
- 3.5938 in
- Lube/Non-Lube
- Lubricated
- Maximum Operating Angular Misalignment
- 0.5 °
- Measurement System
- Imperial
- Outside Diameter (in)
- 9.4375 in
- Overall Length (in)
- 7.3125 in
- Performance
- Lubrication Hole
- Rating HP @ 100 RPM
- 160
- Sleeve Type
- Flanged
- Speed Max (rpm)
- 6,800 rpm
- Style
- FASTS
- Temperature Range
- -40 to +190 °F
- Tooth Profile
- Straight Faced Involute Hub tooth
- Torque [Max] (in-lb)
- 202,000 in/lbs
- Torque Rating (in-lb)
- 101,000 in/lbs
Always verify dimensions, load ratings, material, and seal type before ordering.
- Brandi
- Kop-Flex
- Mfg. Catalog Numberi
- 3F SB FF FB
- Mfg. Part Numberi
- 2275949
- GDS #i
- GDS-109107
- Categoryi
- Complete Units
- UPCi
- 662384011234
Common Questions
What is the outside diameter of the 3F SB FF FB?
The 3F SB FF FB has a outside diameter of 9.4375 in. The specification table above lists every published dimension for this part.
Is this a genuine Kop-Flex part?
Yes. GDS Supply supplies the genuine Kop-Flex 3F SB FF FB, manufacturer article number 2275949. Its UPC is 662384011234.
