SKF Bearing QJ 306 MA Four Point Contact Ball Bearing 30 Mm Bore Machined Metal Cage Bearing Steel CN Axial Internal Clearance 53 kN Dynamic Load Rating 41.5 kN Static Load Rating

SKF QJ 306 MA 30mm bore four-point contact bearing, 1pc
✔️ CN axial clearance; 53 kN dynamic; 41.5 kN static; 30 mm bore

This precision bearing from SKF uses four-point contact to handle mixed loads in compact machinery. It's commonly used in gearboxes, conveyors, packaging lines, and printing presses where shaft alignment and load distribution matter.

✅ Axial internal clearance CN
✅ Basic dynamic load rating 53 kN
✅ Basic static load rating 41.5 kN
✅ Bearing material Bearing steel
✅ Bore diameter 30 mm (1.18 in)
✅ Cage Machined metal
✅ Contact type Four-point contact
✅ Ring type Two-piece inner ring and one-piece outer ring
✅ Sealing Without
✅ Lubricant None
✅ Outer ring locating feature None
✅ Width 19 mm (0.75 in)
✅ Outer diameter 72 mm (2.83 in)
✅ Pack size Single bearing

Dimension	Metric	Inches
Bore diameter	30 mm	1.18 in
Outer diameter	72 mm	2.83 in
Width	19 mm	0.75 in
Pack length	76 mm	2.99 in
Pack width	23 mm	0.91 in
Pack height	78 mm	3.07 in

💡 What is a four-point contact bearing used for in industrial machinery?

Handy for compact setups needing reliable axial and radial load support.

• Four-point contact bearings provide stability under mixed loading
• They help keep shafts aligned under varying loads
• Common in gearboxes, conveyors, and printing equipment