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Technical Specifications

Seat Washer
U204
d 20 mm Inside Diameter(I.D.)
D 40 mm Outer Diameter(O.D.)
H 17 mm Height/Thickness
Cr 21.2 kN Dynamic Load Rating
Cor 37.5 kN Static Load Rating
Pu 1.4 kN Axial Static Radial Load Rating
reference 5600 r/min Reference Speed
limit 8000 r/min Limiting Speed
Mass 0.1 Kg Weight

Main Dimensions

20mm × 40mm × mm

Precision Rating

P0 (Standard) / P6 / P5 / P4 (Higher precision for demanding applications)

Cage

Steel cage

Material

  • GCr15 Bearing Steel (Industry-standard for high load & fatigue resistance)
  • GCr15SiMn
  • GCr18Mo
  • G20Cr2Ni4A

Clearance

C3 (standard), customizable to C0/C2/C4/C5

Brand

WJY / OEM Available

Origin

Wafangdian, China (Global bearing manufacturing hub with 30+ years expertise)

Quality Standard

ISO 9001:2015 Certified

Product Description

The 53 series single direction thrust ball bearings with a sphered housing washer (Model: 53204) are engineered to handle axial loads in one direction efficiently. Featuring a U204, these bearings provide self-aligning capabilities to compensate for angular misalignment in mounting surfaces, ensuring uniform load distribution and extended service life. Manufactured from ISO 9001-certified chrome steel (GCr15) with carbonitriding treatment, they offer exceptional wear resistance and fatigue strength. With a bore diameter of 20mm, outer diameter of 40mm, and height of 17mm, these bearings deliver a dynamic load capacity of 21.2kN and static load capacity of 37.5kN. Ideal for precision instruments (e.g., dental equipment, optical devices), they are particularly suited for applications requiring self-aligning capabilities under axial loads. Compliant with ISO 9001 standards, these bearings support grease lubrication (oil lubrication available for high-speed operations) and operate within a temperature range of -30°C to +120°C. During installation, a recommended torque of 30-80 N·m is advised for housing washer bolts to ensure optimal performance. The manufacturer offers a Standard 12-month warranty extendable up to 18 months through authorized Jinyu distributors. OEM solutions available.

FAQ

Our bearings come with a 12-month warranty from the date of delivery. This warranty covers any manufacturing defects under normal operating conditions. For specific applications with extreme conditions, we can provide extended warranty options upon request.

For standard models that are in stock, we can ship within 3-5 working days after receiving payment. For standard models not in stock, lead time is typically 2-3 weeks.

For customized spherical roller bearings, lead time depends on the complexity of customization and quantity, usually ranging from 4-8 weeks. We can provide a more accurate timeline after evaluating your specific requirements.

We accept various payment terms including:

  • T/T (Telegraphic Transfer): 30% deposit, 70% before shipment
  • L/C (Letter of Credit): Irrevocable L/C at sight
  • Western Union for small orders
  • Negotiable terms for long-term customers

Yes, we provide comprehensive technical support including:

  • Installation guidelines and recommendations
  • Lubrication selection advice
  • Maintenance schedules and procedures
  • Online technical consultation via email and WhatsApp
  • On-site technical support can be arranged for large projects (additional fees may apply)

Yes, we specialize in producing non-standard and customized spherical roller bearings. We can manufacture according to your drawings, samples, or specific technical requirements. Our engineering team will evaluate your requirements and provide a detailed quotation including design confirmation, material selection, and production timeline.

We offer flexible shipping options to meet your needs:

  • Ocean Freight: Most economical for large orders and full container loads
  • Land Transport: Suitable for regional deliveries and smaller shipments

Delivery Time:

  • Standard bearings: 3-5 days for in-stock items
  • Custom/OEM orders: 20-35 days for production and delivery
  • Exact timing depends on order quantity, customization, and destination

Contact our sales team for specific shipping quotes and delivery estimates based on your location and requirements.

Our bearing pricing is influenced by several key factors:

  • Precision Grade: P0 (Standard), P6, P5, or P4 precision levels
  • Raw Materials: GCr15, GCr15SiMn, GCr18Mo, or other specialty steels
  • Market Factors: Raw material costs and market demand
  • Order Quantity: Volume discounts available for larger orders
  • Customization: Special features, coatings, or modifications

For accurate pricing, we provide customized quotes based on your specific requirements. Please submit an inquiry with your needed specifications, quantities, and any special requirements for a detailed quotation.