Timken vs. SKF Bearings: The Difference Between Tier-1 Bearing Brands
When sourcing a replacement bearing, you will often find both Timken and SKF options for
Availability:
3 in stock
Fafnir four-bolt flanged ball bearing unit, 2-11/16 in bore, cast iron housing, eccentric locking collar, non-expansion, relubricatable. 15,600 lbf dynamic. US-made new old stock.
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| MFR / Brand | Fafnir |
|---|---|
| MPN | RCJ-2-15/16 |
| Model | RCJ2 15/16 |
| ID | 2-11/16 in |
| Condition | New – Open box |
|---|---|
| Type | Flanged Mount Bearing |
| Relubrication | Relubricatable |
| Base Number | RCJ2 11/16 |
| Industry Terms | four bolt flange bearing; flange mount bearing unit; flanged bearing housing; eccentric collar bearing; mounted ball bearing; wide inner ring bearing unit; flange cartridge; bulkhead bearing |
| Common Misspellings | RCJ 2-11/16; RCJ2 1116; RCJ-211/16; RCJ2X11/16; Fafner RCJ2 11/16; Fafnier; Timkin RCJ2 11/16; RCJ2 11-16 |
| Application Types | Conveyors and bucket elevators; fans and blowers on bulkhead mounts; agricultural machinery; material handling equipment; grain and aggregate handling; general shaft support through a vertical face |
| Condition Note | Made In USA, New Old Stock |
| Bolt Center To Center Length | 5.8750 in (149.23 mm) |
| Bearing Insert Type | Ball |
| Bore Shaft Size | 2.6875 in (68.26 mm) |
| Housing Style | Four-bolt flange |
| Locking Method | Eccentric locking collar |
| Replacement Insert | G-KRRB wide-inner-ring ball bearing (R-seal) |
| Mpn Variants | RCJ2 11/16; RCJ-2-11/16; RCJ2-11/16; RCJ211/16; RCJ 2 11/16 |
| Manufacturer Status | Fafnir mounted bearings supplied under The Timken Company |
| Compatible With Replaces | Timken Fafnir RCJ2 11/16; same RCJ four-bolt flange family as RCJ2 and RCJ2 1/4 in adjacent bore sizes; RCJO2 11/16 is a DIFFERENT series (RYVS) and is not equivalent |
| Additional Attributes | Mounting style: four-bolt flange - bolts to a vertical face or bulkhead, shaft perpendicular to the mounting surface; Bolt circle diameter: 8.3080 in (210.98 mm); Bolt centre-to-centre: 5.8750 in (149.23 mm); Overall flange length/diameter: 7.3750 in (187.33 mm); Shaft fit: straight shaft, slip fit; Locking: eccentric collar, cam action - grips harder in the direction of rotation than a plain setscrew and resists creep on driven shafts; Expansion: non-expansion (fixed) - locates the shaft axially, pair with an expansion unit at the far end of a long shaft to avoid thermal preload; Lubrication: relubricatable via housing provision; Insert: G-KRRB wide-inner-ring ball bearing with R contact seals; Country of manufacture: United States |
| Bearing Type | Mounted ball bearing unit - four-bolt flange |
| Design Units | Imperial |
| Part Number | RCJ2 11/16 |
| Cross Reference 1 | Timken Fafnir RCJ2 11/16 (four-bolt flanged, eccentric locking collar) |
|---|---|
| Cross Reference 2 | RCJ-2-11/16 |
| Cross Reference 3 | Insert bearing: G-KRRB series wide inner ring |
The Fafnir RCJ2 11/16 is a four-bolt flanged mounted ball bearing unit with a 2-11/16 in bore, a cast iron housing and an eccentric locking collar. US-made new old stock.
Radial dynamic capacity: 15,600 lbf (69.4 kN), per Timken
Radial static capacity: 9,650 lbf (42.9 kN)
Flange across: 7.375 in
Bolt centre-to-centre: 5.875 in
Bolt circle: 8.308 in
Expansion type: non-expansion (fixed)
It is a non-expansion (fixed) unit, so it locates the shaft axially rather than allowing it to grow — on a long shaft it should be paired with an expansion unit at the far end to avoid thermal preloading. Four-bolt flange units bolt to a vertical face or bulkhead rather than a horizontal base, so the shaft runs perpendicular to the mounting surface.
The insert is a G-KRRB wide-inner-ring ball bearing with R contact seals, relubricatable through the housing, and the unit mounts on a straight shaft with a slip fit — the eccentric collar then locks it by cam action, which grips harder in the direction of rotation than a plain setscrew and resists creep on a driven shaft.
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