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Deep Groove Ball Bearings: The Industry Default and When to Reach for Something Else
If you pulled a bearing off general industrial equipment at random, there’s a good chance
Availability:
4 in stock
Two-bolt flange mounted ball bearing unit, 5/8 in shaft, concentric locking collar, 3.000 in bolt hole spacing, shroud contact seals. Sold as 1 Pc complete unit.
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$25.48
4 in stock
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| MFR / Brand | Fafnir |
|---|---|
| MPN | RCJTC-5/8 |
| GTIN | 087796056503 |
| Model | RCJTC 5/8 |
| ID | 0.625 in |
| Material | Cast Iron |
|---|---|
| Series | RCJTC |
| Type | Flanged Mount Bearing |
| Lubricant | Grease |
| Relubrication | Relubricatable insert (G-series grease path) |
| Base Number | RCJTC5/8 |
| Industry Terms | two-bolt flange unit; flangette; wide inner ring bearing unit; concentric collar bearing; housed unit |
| Common Misspellings | Fafnier; Faffnir; Fafner; RCJCT5/8; RJCTC5/8; RCJTC 5-8 in |
| Application Types | Conveyors; fans and blowers; farm machinery; light industrial line shafting |
| Overall Width | 23.6 mm / 0.929 in (housing width A) |
| Bolt Center To Center | 3.0 in |
| Number Of Bolt Holes | 2 |
| Bolt Center To Center Length | 76.2 mm / 3.000 in |
| Number Of Bolt Holes For Fasteners | 2 |
| Bearing Insert Type | Ball |
| Bore Shaft Size | 5/8 in (15.875 mm) |
| Housing Style | Two-bolt flange |
| Locking Method | Concentric locking collar, two setscrews |
| Replacement Insert | Fafnir GC1010KRRB |
| Mpn Variants | RCJTC-5/8; RCJTC5/8; RCJTC 5/8; RCJTC58; RCJTC 5-8 |
| Manufacturer Status | Fafnir is a brand of The Timken Company |
| Arrangement Configuration | Complete unit: housing, insert bearing and concentric locking collar |
| Dynamic Load Rating C1 | 10,600 N / 2,360 lbf |
| Dynamic Load Rating | 10,600 N / 2,360 lbf |
| Static Load Rating | 4,700 N / 1,060 lbf |
| Rolling Elements | Ball |
| Bearing Type | Mounted ball bearing unit, two-bolt flange |
| Item Weight | Approx. 0.81 lb / 0.37 kg |
| Limiting Speed | 7,370 |
| Number Of Rows | 1 |
| Bore Type | Straight |
| Snap Ring Included | Yes, on the insert outer ring (B suffix) |
| Duty Type | Standard Duty |
| Locking Device | Concentric locking collar, two setscrews |
| Insert Outer Ring | Spherical |
| Relubrication Feature | Relubricatable through the G-series grease path |
| Harmonization Code | 8483.20.40 |
| Housing Material | Cast Iron |
| Expansion Type | Non-Expanding |
| Design Units | Imperial |
| Bearing Material | Steel insert bearing in a cast iron housing |
| Part Number | RCJTC 5/8 |
| Cross Reference 1 | SKF FYTB 5/8 TF |
|---|---|
| Cross Reference 3 | Link-Belt FX3-U210N |
A Fafnir RCJTC-5/8 two-bolt flanged mounted ball bearing unit sized for a 5/8 in shaft. The cast-iron flange housing carries a GC1010KRRB wide-inner-ring insert with shroud contact seals and a concentric locking collar.
RCJTC is the Fafnir Industrial-series two-bolt flanged housed unit with a concentric locking collar; the same housing with an eccentric collar carries the designation RCJT. The trailing 5/8 is the shaft size in inches. In the insert number GC1010KRRB, the GC prefix marks the relubricatable wide-inner-ring insert built for a concentric collar, 1010 encodes the 10/16 in – that is 5/8 in – bore, KRR denotes the wide inner ring with two contact seals, and B adds a snap-ring groove and retaining ring on the outer ring.
A concentric collar clamps square to the shaft: it is set in any angular position and held by two setscrews spaced around its circumference, so it locates the shaft without the angular offset a cam collar introduces and it grips the same in either direction of rotation. An eccentric collar instead relies on cam action in the direction of rotation. Concentric locking is the differentiating spec of the RCJTC series against the RCJT series in the same housing envelope.
Housing construction: two-bolt flange, oval flange face
Bolt hole spacing J: 76.2 mm / 3.000 in centre to centre
Bolt hole size N: 9.9 mm / 0.39 in
Flange thickness A1: 8.3 mm / 0.328 in
Total length H: 98.4 mm / 3.874 in
Total height L: 60.3 mm / 2.375 in
Housing width A: 23.6 mm / 0.929 in
Shaft size d: 5/8 in (15.875 mm)
Insert bearing number: GC1010KRRB
Seal type: shroud contact seal
Dynamic load rating: 10 600 N / 2 360 lbf
Static load rating: 4 700 N / 1 060 lbf
Maximum speed: 7 370 rpm
Dimension B1: 26.59 mm / 1.047 in
Dimension S1: 15.5 mm / 0.609 in
Dimension E: 32.7 mm / 1.287 in
Weight: approximately 0.81 lb
Complete flange unit: housing, insert bearing and concentric locking collar. 1 Pc.
The flange face seats against a flat rigid vertical surface, shimmed where the face is uneven, with the two bolts drawn up evenly on 3.000 in centres. The collar is slid onto the extended inner ring and its two setscrews are tightened in sequence. The insert is relubricatable through the G-series grease path.
The replacement insert for this housing is the Fafnir GC1010KRRB. RCJT5/8 is the eccentric-collar version of the same two-bolt flange envelope. SealMaster SFT-5/8 and the metric-series UCFL202-10 cover the same 5/8 in shaft on a two-bolt oval flange with setscrew locking through the inner ring; those are related sizes on a different bolt pattern and locking method.
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