2280543 Kop-Flex 4F EB FR (Rexnord PN ) Size 4 FASTS gear coupling with extended bore and rough bore, 12.5"
KKM Solutions is an independent parts distributor, not an authorized Kop-Flex dealer — how we source.
Kop-Flex 2280543 - Complete Units - Material: Medium Carbon Steel; Coupling Size: 4; Style: FASTS.
Overview
Part number 2280543 from Kop-Flex, listed in Shaft Couplings & Collars. Specifications on file: Bolt Circle 11; Bolt Type Exposed; Bore Size Max 4.25; Bore Type Rough Bore. KKM Solutions quotes this part with pricing and availability confirmed per order.
Kop-Flex 4F EB FR FASTS gear coupling, Size 4, extended bore, rough bore, 12.5" OD, 4.25" max bore, lifetime metallic seal, lubricated. Kop-Flex 2280543 — Complete Units. Specs: Material: Medium Carbon Steel · Style: FASTS · Performance: Lubrication Hole · Configuration: Flex Rigid · Temperature range: -40 to +190 °F · Overall Length (in): 9.75 in · Length Through Bore (in): 4.4375 in · Bore Type: Rough Bore. Quoted per order by KKM Solutions.
Specifications
| Bolt Circle | 11 |
|---|---|
| Bolt Type | Exposed |
| Bore Size Max | 4.25 |
| Bore Type | Rough Bore |
| Configuration | Flex Rigid |
| Coupling Size | 4 |
| Coupling type | Gear Coupling |
| Fastener Quantity | 8 |
| Fastener Size & Length | 3/4 x 3 3/8 |
| Hub Diameter (in) | 9 |
| Includes | Hubs (1) Sleeve (1) Rigid (1) Seal (2) |
| Length Through Bore (in) | 4.4375 in |
| Lube/Non-Lube | Lubricated |
| Material | Medium Carbon Steel |
| Max Bore w/standard key for Flex Hub | 4.25 |
| Measurement System | Imperial |
| Min Compatible Bore Size (in) | 0.000000 |
| Min Compatible Bore Size Flex Hub (in) | 2.625 |
| Min Compatible Bore Size Rigid Hub (in) | 2.5 |
| OD | 12.5 |
| Overall Length (in) | 9.75 in |
| Performance | Lubrication Hole |
| Rating HP @ 100 RPM | 375 |
| Sleeve Type | Flanged |
| Speed max. [rpm] | 5260 |
| Style | FASTS |
| Temperature range | -40 to +190 °F |
| Tooth Profile | Straight Faced Involute Hub tooth |
| Torque [Max] (in-lb) | 472000 |
| Torque Rating (in-lb) | 236000 |
Product details
| Manufacturer | Kop-Flex |
|---|---|
| Manufacturer part number | 2280543 |
| Product category | Shaft Couplings & Collars |
| Published specifications | 30 attributes listed |
| Related part numbers | 9 other part numbers in this family |
Request a quote for this part
Email orderdesk@kkmsolutions.com or call (825) 454-5367 for pricing and availability.
Frequently Asked Questions
How do I get pricing for 2280543?
This part is quoted on request, so no price is listed for it here. Send the quote form on this page with your quantity, or email orderdesk@kkmsolutions.com, and our order desk will reply with pricing and availability within 1 business day.
Who manufactures the 2280543?
2280543 is made by Kop-Flex and is listed in our Shaft Couplings & Collars category. KKM Solutions is an independent distributor, not an authorized Kop-Flex dealer: we source the exact Kop-Flex part number 2280543, and the quote confirms condition and lead time before you order.
Is the 2280543 new and genuine?
Parts we supply are new and genuine unless the quote expressly states otherwise. Where a part is new-old-stock, from excess inventory, refurbished or open-box, the quote says so before you approve it.
What warranty comes with the 2280543, and can I return it?
Parts we supply are warranted against manufacturing defects for 1 year from the date of delivery; where the manufacturer's own warranty is longer, the manufacturer's warranty applies. The warranty covers repair, replacement, or credit of the defective part and does not cover normal wear items, misapplication, improper installation, or consequential damages. Contact us within 30 days of delivery before returning anything — all returns need a return authorization from the order desk.
What is the lifecycle status of 2280543?
No published lifecycle status is on file for 2280543. Kop-Flex lists whether a catalog number is current, superseded or end-of-life on its own product page, and our order desk confirms the status with the manufacturer at quote time, before you commit. Send the part number through the quote form on this page.
What are the key specifications of 2280543?
Key specifications include Bolt Circle: 11; Bolt Type: Exposed; Bore Size Max: 4.25; Bore Type: Rough Bore. The full specification table on this page lists every published attribute for this part.
What is the bore size of 2280543?
Per the published specification for 2280543: Length Through Bore (in): 4.4375 in; Max Bore w/standard key for Flex Hub: 4.25. Confirm against the full specification table on this page, or ask our order desk to verify it with the manufacturer at quote time.
What operating temperature is 2280543 rated for?
Per the published specification for 2280543: Temperature range: -40 to +190 °F. Confirm against the full specification table on this page, or ask our order desk to verify it with the manufacturer at quote time.
What material is 2280543 made of?
Per the published specification for 2280543: Material: Medium Carbon Steel. Confirm against the full specification table on this page, or ask our order desk to verify it with the manufacturer at quote time.
How quickly can 2280543 ship?
Lead time for 2280543 is quoted per order and confirmed on your quote, which our order desk sends within 1 business day. For a line-down emergency, call the 24/7 order desk at (825) 454-5367.
Variants & Related Part Numbers
Other Kop-Flex part numbers in this family:
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