GQZ 7312B Angular Contact Ball Bearing 60×130×31mm For Medium-Heavy Duty Industrial Transmission Equipment
7312B is single row angular contact ball bearing. The suffix B stands for 40° contact angle. It can bear combined radial load and unidirectional axial load. Larger contact angle delivers superior axial bearing capability compared with A and C type versions. Bearings need to be installed in paired arrangement when bidirectional axial load exists. Widely used in industrial gearboxes, heavy-duty water pumps, air compressors, mining machinery and medium-heavy load rotary assemblies.
Formal quotation will be sent within 24 hours upon your inquiry.
- Model
- 7312B
- Dimensions
- d60 mm, D130 mm, B31 mm
- Net weight
- approx 1.74 kg
- Dynamic load rating Cr
- 112 kN
- Static load rating Cor
- 88.5 kN
- Limiting speed
- Grease 3600 rpm, Oil 4300 rpm
- Structure
- Single row angular contact ball bearing, 40° contact angle
- Material
- GCr15 bearing chrome steel, stamped steel cage
- Clearance
- Standard CN clearance; C3 clearance optional
- Optional matching configuration
- DB / DF / DT paired arrangement available
Complete dimension drawings and load data available on request.
- 40° large contact angle provides excellent unidirectional axial load capacity
- Able to withstand combined radial load and one-way axial load
- Robust structural layout adapts medium and heavy-load working conditions
- Can be combined back-to-back, face-to-face or tandem to meet different load demands
- High rigidity and stable operation under light impact loads
- Customizable options: OEM laser marking, solid machined cage, special high-temperature grease
Suitable for rotary equipment with prominent axial force.
- Heavy-duty industrial gearboxes and large reduction devices
- Centrifugal water pumps and screw air compressors
- Mining machinery and construction equipment transmission assemblies
- Metallurgical auxiliary equipment and fan supporting shafts
- General medium-speed rotary equipment subjected to obvious axial thrust
- Mechanical systems requiring paired angular contact bearing installation
- 25 years professional bearing manufacturer
- Products exported to over 50 countries worldwide
- Strict inspection on raw material hardness, surface finish, load capacity and rotational smoothness before delivery
- 24-hour professional technical support for pairing arrangement and installation guidance
- Sufficient bulk stock for machinery distributors
- We supply stable dimensional accuracy, reliable performance and long-term cooperative support.
- GCr15 raw material chemical composition and hardness inspection
- Complete quenching & tempering heat stabilization treatment
- Precision superfinishing grinding for raceways and steel balls
- Geometry and contact angle detection
- Full dimension tolerance, clearance testing and rotational performance inspection
If you need 7312B angular contact ball bearings:
Send inquiry to obtain below supports:
- Quick formal quotation within 24 hours
- Professional pairing installation suggestion
- Solid cage alternative solutions
- Competitive factory direct price
Contact our sales team for full technical datasheets and formal offer.
- Q1: What does B represent?
- B = 40° contact angle.
- Q2: Main dimensions of 7312B?
- 60×130×31 mm single row angular contact ball bearing.
- Q3: Installation hint?
- Single bearing only supports one-way axial load; use matched pairs for bidirectional axial force.
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