QJ 312 MA

QJ 312 MA Four-Point Contact Angular Contact Ball Bearings (General)
Part Number QJ 312 MA
Brand: LILY
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Equivalent: SKF
System of Measurement Metric
Bearing Type Ball
Internal Design High Speed
For Load Direction Four Point Contact
Construction Single Row
Seal Type Open
Bore Dia 60 mm
Bore Dia Tolerance -0.012mm to 0
Outer Dia 130 mm
Outer Dia Tolerance -0.015mm to 0
Width 31 mm
Width Tolerance -0.05mm to 0
Shoulder Diameter Inner Ring (Large Side Face)(d1) 77 mm
Shoulder Diameter Outer Ring (Large Side Face)(D1) 106 mm
Chamfer Dimension (r1 2)(min) 2.1 mm
Distance Pressure Point (a) 67 mm
Ring Material Chrome Steel
Ball Material Chrome Steel
Cage Material Brass
Dynamic Radial Load 35100 lbf
Static Radial Load 30825 lbf
Max Speed (X1000 rpm) 9
Lubrication Lubricated
Temperature Range -30° to 110 °C
ABEC Rating P6 (ABEC-3)
ROHS Compliant
REACH Compliant
Weight 2.15 kg
QJ 312 MA Four-Point Contact Angular Contact Ball Bearings (General) cad drawing

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Design Features of QJ 312 MA Bearing

QJ 312 MA Bearing is characterized by a unique design where a single row of balls engages with four points of contact on the raceways (two inner and two outer points). This configuration forms an angular contact that allows the bearing to support axial loads from both directions. QJ 312 MA bore dia is 60 mm. Its out dia is 130 mm. QJ 312 MA width is 31 mm. It provides a balance of load handling, space utilization, and performance.

 

What Benefits Can QJ 312 MA Bearing Provide?

  • Axial Load Handling: Capable of supporting significant axial loads in both directions, ideal for applications requiring bidirectional axial load support.
  • Compact Design: Combines the functionality of double-row bearings in a more compact form, saving space in assembly.
  • Radial Load Capacity: Efficiently handles radial loads, providing versatility in various mechanical setups.
  • Precision and Stability: Offers high precision and stability in operation, essential for applications requiring accurate rotational movement.
  • Space Efficiency: Ideal for applications with limited space, delivering robust performance without the need for larger bearing arrangements.

 

What Can QJ 312 MA Bearing Be Used for?

QJ 312 MA Bearing is utilized in applications that demand robust axial and radial load support within a compact design. Key uses include:

  • Turntables and Indexing Tables: For precise and stable rotation under combined loads.
  • Steering Systems: In automotive and marine applications for efficient steering control.
  • Industrial Machinery: In gearboxes and drives where space efficiency and load capacity are crucial.
  • Cranes and Hoists: Providing reliable performance under heavy loads in lifting equipment.
  • Rotary Tables: In machine tools for precise positioning and movement.