SKF6307TCC78Deep Groove Ball Bearing – Straight Bore, 35 mm ID, 80 mm OD, 21 mm Width, Open, Machined Phenolic Cage, P5 Precision

Product Description

What this part is

SKF 6307 TC C78 deep groove ball bearing. Bore 35 mm, outside diameter 80 mm, width 21 mm. Series: 63. Straight bore, open on both faces, machined phenolic cage. Country of origin: United States.

Decoding the designation

6307: deep groove ball bearing, 35 mm bore, 63 dimension series. Precision Class: P5, ABEC 5 — a tighter tolerance than a standard bearing, giving lower running vibration and closer shaft location. Cage Material: phenolic, machined from fabric-base laminate. C78 is an SKF order-code variant recorded here as a searchable part-number form.

Published ratings

Dynamic load rating: 35.1 kN. Static load rating: 19 kN. Limiting speed: 14,000 rpm. Operating range: −30 °C to 120 °C. Mass: 1.01 lb.

What these specs mean in practice

A machined phenolic cage is light, self-lubricating and quiet, which is why it appears on high-speed and instrument-grade deep groove positions where a pressed steel cage would limit speed. P5 tolerances hold the bore, outside diameter and running accuracy inside a tighter band than P0, so shaft and housing location repeat closely from bearing to bearing. Open faces let the position be oil-lubricated or grease-packed to suit the machine.

Quantity and configuration

One bearing. Unit quantity: 1 Pc.

Fitting notes

Straight 35 mm bore on a cylindrical shaft seat. A deep groove ball bearing of this size carries radial load with moderate thrust in either direction.

Interchange guidance

Same-envelope designations: FAG 6307-TB and NTN 6307. Searchable forms of the number: 6307TCC78, 6307 TC C78, 6307-TC-C78, 6307TC, 6307.