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Timing Belt Pulleys and V-Belt Sheaves: Matching Belt Drive Components Correctly
Belt drives may appear simple, consisting of two wheels and a belt for power transfer.
Availability:
15 in stock
Conrad deep groove ball bearing, 60 x 130 x 31 mm, open both faces, C3 clearance, pressed steel cage. Dynamic 81,900 N, static 52,000 N, 5,000 rpm on grease.
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$35.18
15 in stock
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| MFR / Brand | MRC |
|---|---|
| MPN | 312-S |
| Model | 6312C3 |
| Bearing Type | Ball Bearing |
| ID | 60 mm (2.3622 in) |
| OD | 130 mm (5.1181 in) |
| Width | 31 mm (1.2205 in) |
| Base Number | 312 |
|---|---|
| Industry Terms | Deep groove ball bearing; Conrad bearing; open ball bearing; C3 clearance bearing; radial ball bearing; Marlin Rockwell |
| Common Misspellings | 312-S; 312 S; MCR 312S; MRC312S |
| Bore Shaft Size | 60 mm (2.3622 in) |
| Mpn Variants | 312S; 312-S; 312 S; 312-S-LO; 312-S-L0 |
| Additional Attributes | Conrad deep groove, no filling notch; full shoulders on both rings; equal load-carrying capacity in either direction; maximum shaft or housing fillet radius 2.0 mm (0.08 in); load ratings quoted for one million revolutions or 500 hours at 33-1/3 rpm; speed ratings quoted for pressed steel cage at ABEC-1 |
| Dynamic Load Rating | 81,900 N (18,400 lbf) |
| Static Load Rating | 52,000 N (11,700 lbf) |
| Series | MRC 300-S Medium |
| Rolling Elements | Ball |
| Item Weight | 4.0 lb (1.81 kg) |
| Cage Material | Pressed steel |
| Number Of Rows | 1 |
| Bore Type | Straight |
| Limiting Speed | 5,000 rpm grease, 6,000 rpm oil |
| Internal Clearance | ABMA C3 (MRC LO fit) |
| Contact Angle | 0° |
| Part Number | 312S |
| Closure Type | Open, both faces |
| Cross Reference 1 | SKF 6312/C3 |
|---|---|
| Cross Reference 2 | NSK 6312C3 |
MRC 312-S Conrad single-row deep groove ball bearing, open on both faces, with ABMA C3 radial clearance (MRC LO fit). Unit Quantity: 1 Pc. Rolling Elements: ball. Cage Material: pressed steel.
3 — MRC 300-S Medium Series.
12 — bore code, multiplied by five: 60 mm bore.
S — Conrad deep groove, no filling notch.
LO — MRC’s own name for ABMA C3 radial clearance.
Bearing Type: Conrad single-row deep groove. Number Of Rows: 1. Closure Type: open, both faces. Contact Angle: 0°. Internal Clearance: ABMA C3 (MRC LO fit). Dynamic Load Rating: 81,900 N (18,400 lbf). Static Load Rating: 52,000 N (11,700 lbf). Limiting Speed: 5,000 rpm grease; 6,000 rpm oil. Series: MRC 300-S Medium. Item Weight: 4.0 lb (1.81 kg).
Bore Diameter: 60 mm (2.3622 in). Outside Diameter: 130 mm (5.1181 in). Overall Width: 31 mm (1.2205 in). Maximum Shaft or Housing Fillet Radius: 2.0 mm (0.08 in).
Cross-references: SKF 6312/C3; NSK 6312C3. The 60 x 130 x 31 mm open deep groove envelope at C3 clearance is ISO 6312 C3. Same-envelope MRC variants: 312-SF (one shield), 312-SFF (two shields), 312-SZZ (two synthetic rubber seals). MPN variants: 312S, 312-S, 312 S, 312-S-LO.
60 mm bore, 130 mm outside diameter and 31 mm width.
ABMA C3 radial clearance, which MRC’s handbook lists as the MRC LO fit.
Dynamic load rating 81,900 N and static load rating 52,000 N, with limiting speeds of 5,000 rpm on grease and 6,000 rpm on oil.
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Belt drives may appear simple, consisting of two wheels and a belt for power transfer.
Tapered, cylindrical, and spherical roller bearings all solve the same basic problem, carrying more load
If you pulled a bearing off general industrial equipment at random, there’s a good chance
Our team can locate, cross-reference, and source all parts.
Our team can locate, cross-reference, and source all parts.
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