MRC313-SFFDeep Groove Ball Bearing – 65 mm ID, 140 mm OD, 33 mm Width, Two Metal Shields, C3 Clearance

Product Description

What this part is:

MRC 313-SFF is a Conrad single-row deep groove ball bearing with two metal shields, C3 radial internal clearance and a pressed steel cage. Unit Quantity: 1 Pc. Bore Diameter: 65 mm (2.5591 in). Outside Diameter: 140 mm (5.5118 in). Overall Width: 33 mm (1.2992 in). Country of Origin: United States.

Decoding the designation:

3 — MRC 300-S Medium Series.

13 — bore code, multiplied by five: 65 mm bore.

S — Conrad deep groove, no filling notch.

FF — two shields.

C3 — radial internal clearance greater than standard (ABMA #3, MRC-LO fit).

Specifications:

Bearing Type: Conrad single-row deep groove. Series: MRC 300-S Medium. Number Of Rows: 1. Rolling Elements: Ball. Contact Angle: 0°. Cage Material: Pressed steel. Internal Clearance: C3. Closure Type: Two metal shields. Dynamic Load Rating: 92,300 N (20,800 lbf). Static Load Rating: 60,000 N (13,500 lbf). Limiting Speed: 4,800 rpm grease; 5,600 rpm oil. Item Weight: 2.27 kg (5.0 lb).

Dimensions and mounting:

Bore Diameter: 65 mm (2.5591 in). Outside Diameter: 140 mm (5.5118 in). Overall Width: 33 mm (1.2992 in). Maximum Shaft or Housing Fillet Radius: 2.0 mm (0.08 in).

Compatibility and replacement:

Cross-references: SKF 6313-2Z/C3, NSK 6313ZZC3, ISO 6313-2Z C3. MPN variants: 313-SFF, 313SFF, 313 SFF, 6313-2ZC3, 6313 2Z C3, 6313ZZ C3, 6313Z. MRC 313-S is the open version, 313-SF has one shield and 313-SZZ has two synthetic rubber seals.

Frequently asked questions:

What size is the MRC 313-SFF?

65 mm bore, 140 mm outside diameter and 33 mm width.

What do the FF and C3 in MRC 313-SFF mean?

FF is two shields. C3 is radial internal clearance greater than standard.

What are the load ratings and speed ratings?

MRC lists a dynamic load rating of 92,300 N and a static load rating of 60,000 N. The limiting speed is 4,800 rpm on grease and 5,600 rpm on oil.