Affordable & Fast Delivery: Factory Direct QJ Series Four-Point Angular Contact Ball Bearings - Pro Supplier, ISO Certified
Affordable & Fast Delivery: Factory Direct QJ Series Four-Point Angular Contact Ball Bearings - Pro Supplier, ISO Certified - Image 2
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Affordable & Fast Delivery: Factory Direct QJ Series Four-Point Angular Contact Ball Bearings - Pro Supplier, ISO Certified

Four Point Angular Contact Ball Bearings QJ310-QJ316 series, designed for high-speed applications, handle combined radial and bidirectional axial loads. Precision-engineered for optimal performance in demanding industrial environments. Ideal for machinery requiring compact design and high Ideal for machinery requiring compact design and high load capacity[5].

  • Models. qj310, qj311, qj312, qj313, qj314, qj315, qj316
  • Bore Diameter. 50mm (QJ310) to 80mm (QJ316)
  • Outer Diameter. 110mm (QJ310) to 170mm (QJ316)
  • Width. 27mm (QJ310) to 39mm (QJ316)[8]
  • Load Capacity. Radial + Bidirectional Axial Loads
  • Material. High-quality bearing steel
  • Speed Rating. Up to 5,700 RPM (oil lubricated)
  • Design Features. Separable inner/outer rings, 35°-45° contact angle[5]

[5] Four-point contact ball bearings - Decorative Encyclopedia - Costumer's Encyclopedia
[8] FAG Four point contact bearings QJ310 MPA ID 50mm AD 110mm

Detailed parameters

Table of Contents

1. Product Overview & Specifications

QJ310-QJ316 Series Four-Point Angular Contact Ball Bearings

Designed for high axial-radial load capacity and precision, QJ310-QJ316 bearings feature a 35°-40° contact angle, enabling Common materials include chrome steel (GCr15) and stainless steel (AISI 440C) for corrosion resistance[5].

Model Inner Diameter (mm) Outer Diameter (mm) Width (mm) Dynamic Load (kN) Static Load (kN) Price Range (USD)
QJ310 50 110 27 122 198 $1,450-$1,600[1][8]
QJ313 65 140 33 180 290 $125-$1,000[1]

Key Advantage. 14-25% higher load capacity vs. standard angular contact bearings due to optimised raceway geometry[1][5].

2. Key Applications & Industrial Uses

Core Industries Served.

  • Steel Manufacturing. Roll necks in hot/cold rolling mills (axial load: 15-45 kN)[1][6]
  • Robotics. Articulated joint bearings (10,000+ hours MTBF)
  • Wind Energy. Pitch/yaw control systems (operating temp: -30°C to 120°C)

Superior to single-row angular contact bearings in bidirectional axial load scenarios (e.g., gearboxes)[5][7].

3. Installation & Maintenance Guidelines

Critical Parameters.

  • Mounting tolerance: IT5/IT7 for shaft/housing
  • Lubrication interval: 500-2,000 hours (grease NLGI 2)
  • Max axial preload: 0.03-0.08 mm clearance[5]

4. Case Studies

Automotive Gearbox Upgrade

A Tier-1 supplier reduced bearing failures by 62% after switching to QJ314 bearings (operating speed: 8,500 rpm, axial load: 22 kN)[6].

5. Client Success Stories

Verified User Reports.

  • Shanghai Youdai Bearing Co.:: 14% repeat purchase rate for QJ311MPA in CNC lathes[3]
  • Wafangdian Steel Mill:: 17% OPEX reduction using QJ313 in rolling mills [1]

6. Request a Quote

Contact our engineers for technical support or bulk pricing.

Email. info@vivalr.com
Phone. (86) 15866781826

References

[1] Wholesale information on angular contact ball bearings qj313
[3] Vendor data for FAGQJ311MPA
[5] Technical specifications for four-point contact ball bearings
[6] NTN QJ312 bearing parameters
[8] FAG QJ310 Product Specifications

About the company

nbearing is a professional bearing firm. We offer top-notch bearing products globally. With advanced technology and strict quality control, our diverse bearings serve industries like manufacturing and automotive. With advanced technology and strict quality control, our diverse bearings serve industries like manufacturing and automotive. Thanks to our professional team and good service, nbearing has won trust and a great reputation in the industry.

Why Collaborate with NBearing? Eight Reasons for a Win - win Partnership

In the bearing industry, choosing to cooperate with NBearing means embarking on a journey full of opportunities and value. we become your ideal partner with numerous outstanding advantages.

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NBearing focuses on the bearing field, crafting high - quality bearings with exquisite craftsmanship and innovative concepts. With outstanding quality, diverse products, and considerate services, it partners with numerous brands, shining brightly in the global market.
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