SKF 311 Z C3 Shielded Deep Groove Bearing with 55 mm bore, bearing steel, sheet metal cage, no lubricant prefill, up to 6300 rpm, offering durable, low maintenance rotation for precision machines

SKF 311-Z/C3 Sealed Ball Bearing, 55 mm Bore, Single Pack
✔️ Bore 55 mm (2.17 in); OD 120 mm (4.71 in); Width 29 mm; Shield on one side

SKF 311-Z/C3 is a single-row deep-groove ball bearing with a cylindrical bore, designed for rotating shafts in conveyors, drive systems, and general machinery. It uses bearing steel, a sheet metal cage, and a non-contact shield on one side for reliable operation and reduced maintenance. This compact unit carries a robust radial load rating and a normal clearance class, suitable for everyday industrial use.

✅ Basic Dynamic Load Rating: 79.2 kN
✅ Basic Static Load Rating: 67 kN
✅ Bearing Material: Bearing steel
✅ Outer Ring Locating Feature: None
✅ Bore Diameter: 55 mm
✅ Bore Type: Cylindrical
✅ Cage: Sheet metal
✅ Coating: Without Filling
✅ Limiting Speed: 6300 r/min
✅ Lubricant: None
✅ Matched Arrangement: No
✅ Number of Rows: 1
✅ O.D. (in): 4 5/7 in (120 mm)
✅ Pack Height: 136 mm (5.35 in)
✅ Pack Length: 134 mm (5.28 in)
✅ Pack Width: 35 mm (1.38 in)
✅ Relubrication Feature: Without Sealing Shield on one side
✅ Sealing Type: Non-contact
✅ Tolerance Class: Normal
✅ Width: 29 mm
✅ Reference Speed: 10000 r/min

💡 What is a pillow block bearing used for in mechanical systems and industrial equipment? A handy, practical explanation for choosing bearings in common setups. - Supports rotating shafts in conveyors and drive lines - Maintains shaft alignment to reduce wear and downtime - Handy for equipment with mounting housings and standard shaft sizes