Affordable & Fast Delivery: Standard Size Spherical Roller Bearings 21311-21314 W33 - Direct Factory Prices from Pro Supplier
Affordable & Fast Delivery: Standard Size Spherical Roller Bearings 21311-21314 W33 - Direct Factory Prices from Pro Supplier - Image 2
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Affordable & Fast Delivery: Standard Size Spherical Roller Bearings 21311-21314 W33 - Direct Factory Prices from Pro Supplier

Premium spherical roller bearings (21311, 21312, 21313, 21314 W33) designed for NSK, NTN, and Koyo compatibility. Ideal for heavy radial/axial loads in Ideal for heavy radial/axial loads in industrial machinery, mining equipment, and construction applications.

Technical Parameters.

  • Bore Diameter. 55-70 mm (varies by model)
  • Outer Diameter. 120-150 mm
  • Width. 31-35 mm
  • Dynamic Load Rating. 220-320 kN
  • Static Load Rating. 200-290 kN
  • Speed Limit. 3400-4000 rpm (oil lubrication)
  • W33 Feature. Lubrication groove + 3 oil holes
  • Tolerance Class. ISO P6 (Normal)
  • Weight. 1.8-2.7 kg

Optimized for misalignment compensation (2-3° axial deflection) and extended service life in harsh operating conditions[2][6].

[2] nsk spherical roller bearings 21313-Nsk Spherical Roller Bearings 21313 Wholesale, Promotional Prices, Origin Sources
[6] NSK Bearing Authorised Distributor - Guangzhou Vaughan - Providing you with Japanese imported NSK bearings ...

Detailed parameters

1. Product Overview & Specifications

Standard Size Spherical Roller Bearing Series 21311, 21312, 21313, 21314 W33

Designed for heavy-duty applications, these bearings feature a spherical outer ring and asymmetrical rollers for optimal load distribution. The W33 suffix indicates a lubrication groove and three oil holes [7][10]. suffix indicates a lubrication groove and three oil holes[7][10].

Model Inner Diameter (mm) Outer Diameter (mm) Width (mm) Dynamic Load (kN) Speed Limit (rpm)
21311 W33 55 120 29 325 3,800
21312 W33 60 130 31 380 3,600
21313 W33 65 140 33 435 3,400
21314 W33 70 150 35 495 3,200

Key Advantages. Self-aligning capability (±1.5°), enhanced lubrication efficiency (W33 design), and vibration resistance[2][7].

2. Key Applications

Primary Industries Served

  • Mining Equipment. Crushers, vibrating screens
  • Power Generation. Turbine shafts, gearboxes
  • Pulp & Paper. Dryer cylinders, calendar rolls

These bearings accommodate both radial and axial loads in misalignment conditions, making them ideal for applications with shaft deflection[7][8].

3. Operational Guidelines

Installation & Maintenance

  1. Clean housing surfaces before mounting
  2. Use induction heaters (max 120°C) for interference fits
  3. Apply lithium-based grease (NLGI 2) every 1,500 operating hours

Warning. Improper alignment reduces service life by 40-60% [8].

4. Industry Case Studies

Steel Manufacturing Plant Solution

A Chinese steel mill reduced downtime by 72% after replacing conventional bearings with 21313 W33 units in their hot rolling line[2].

5. Client Success Stories

Verified Installation Reports

Client Application Result
Vietnam Cement Co. Rotary kiln support (21314 W33) 18-month operation without relubrication
Malaysia Palm Oil Processor Extruder gearbox (21312 W33) Vibration levels reduced from 7.5mm/s to 2.1mm/s

6. Request a Quote

Contact our engineering team for technical specifications sheets or bulk pricing.

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

[2] nsk spherical roller bearings 21313-Nsk Spherical Roller Bearings 21313 Wholesale, Promotional Prices, Origin Sources
[7] NSK Bearing Authorised Distributor - Guangzhou Vaughan - Providing you with Japanese imported NSK bearings ...
[8] NSK bearings NSK imported bearings Japan NSK bearing type NSK bearing China general agent
[10] 11NSK Bearing_NSK Bearing Housing_Japan Imported NSK Bearing-NSK Bearing Official Website

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.

Exceptional Quality

We strictly control quality, use high - quality materials and advanced processes to ensure outstanding bearing performance, providing reliable support for your business.

Diverse Range

Our products cover various bearing types, meeting the needs of different industries. One - stop procurement saves you time and effort.

Competitive Pricing

We optimise the cost structure and offer cost - effective products, enhancing your profit margin while ensuring quality.

Customisation Service

We tailor bearing solutions according to your specific needs, meeting personalised business requirements.

Efficient Production

Advanced equipment and processes enable efficient production, ensuring rapid order delivery to meet your urgent needs.

Punctual Delivery

With a 99.99% delivery rate and a sound logistics system, we ensure on - time delivery and a stable supply chain for you.

Professional Team

Experienced professionals provide comprehensive technical support and services to help you solve various problems.

Long - term Partnership

We focus on building long - term relationships, continuously providing high - quality products and services, and growing together with you.

Why Chem-iso's delivery rate is guaranteed to be 99.99%

500+

Cooperate with 500+ suppliers for stable raw material supply.

99%

99% automated production ensures on-time order completion.

10+

10 global warehousing centres enable efficient order response.

8+

Partner with 8 top logistics for punctual goods delivery.

Trusted By 3,500+ Creatives & Businesses

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Join Hands with NBearing, Build a Distinguished Brand Together

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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Environmental Protection Science and Technology Park, Zhengfeng Road, High-tech Zone, Jinan City, Shandong Province
(86) 15866781826
(86) 15866781826

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