MRC6313-2ZJEMDeep 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 Conrad deep groove ball bearing, listed against the ISO 6313-2Z C3 envelope. Bearing Type: Conrad single-row deep groove. Bore: 65 mm (2.5591 in). Outside Diameter: 140 mm (5.5118 in). Overall Width: 33 mm (1.2992 in). Closure Type: two metal shields. Number Of Rows: 1. Rolling Elements: ball. Contact Angle: 0°. Cage Material: pressed steel. Internal Clearance: C3. Dynamic Load Rating: 92,300 N (20,800 lbf). Static Load Rating: 60,000 N (13,500 lbf). Limiting Speed: 4,800 rpm on grease, 5,600 rpm on oil. Maximum Shaft or Housing Fillet Radius: 2.0 mm (0.08 in). Item weight: 5.0 lb (2.27 kg). Series: MRC 300-S Medium. Decoding the designation: 3 — the MRC 300-S Medium Series. 13 — bore code, multiplied by five to give Bore: 65 mm. S — Conrad deep groove, no filling notch. FF — two shields. The ISO form of the same closure is written 2Z or ZZ. C3 — radial internal clearance greater than standard. What these specs mean in practice: Bearing Type: Conrad deep groove with full shoulders on both rings and uninterrupted raceway grooves. That geometry gives equal load capacity in either direction and lets the bearing take substantial thrust in both directions alongside its radial load. Dynamic Load Rating: 92,300 N. Static Load Rating: 60,000 N. Rated for one million revolutions, or 500 hours at 33-1/3 rpm. Internal Clearance: C3, wider than standard. The extra radial clearance survives the loss that a tight shaft fit and a hot inner ring both take out of it, which is why C3 is the usual specification for electric motors, fan shafts and anything running with a significant temperature difference between the rings. Closure Type: two metal shields, running with a small clearance against the inner ring rather than rubbing on it. Shields keep the grease in and coarse contamination out without the drag of a contact lip, which is why the shielded speed rating matches the open one at 4,800 rpm on grease. Maximum Shaft or Housing Fillet Radius: 2.0 mm — the largest corner radius on the shaft shoulder or in the housing bore that the bearing corner will clear. Quantity and configuration: Unit Quantity: 1 Pc. One bearing, shielded on both faces. Interchange guidance: Searchable variants of the number: 6313-2ZC3, 6313 2Z C3, 6313ZZ C3, 6313Z, 313SFF, 313-SFF, 313 SFF. MRC 313-S is the same bearing open, 313-SF carries one shield and 313-SZZ two synthetic rubber seals. The 65 x 140 x 33 mm double-shielded envelope at C3 is the ISO 6313-2Z C3.