GQZ HK4020 Drawn Cup Needle Roller Bearing 40×47×20mm Open End Type For Compact Transmission Units

HK4020 belongs to open-end drawn cup needle roller bearing series. It consists of thin stamped outer shell and needle roller assembly without inner ring. The bearing requires a hardened and ground shaft surface to act as raceway. It features ultra-slim radial dimension and outstanding radial load capacity. Suitable for continuous rotary motion and reciprocating movement. Widely used in automation equipment, hydraulic components, textile machinery, packaging machines and compact mechanical assemblies with strict space constraints.

Formal quotation will be sent within 24 hours upon your inquiry.

Model:

HK4020

Dimensions:

Fw40 mm, D47 mm, C20 mm

Net weight:

approx 0.056 kg

Dynamic load rating Cr:

24.5 kN

Static load rating Cor:

38.2 kN

Limiting speed:

Grease 5200 rpm, Oil 6300 rpm

Structure:

Open end drawn cup needle roller bearing, without inner ring

Material:

Bearing steel thin drawn cup, precision needle rollers

Optional variants:

closed end type available on request

Complete dimension drawings and load data available on request.

1. Ultra-thin wall structure, significantly saves radial installation space
2. Dense needle roller arrangement delivers excellent radial load carrying capability
3. Lightweight stamped shell optimizes overall equipment structural design
4. Open end design allows convenient grease replenishment for long-term operation
5. Requires hardened shaft surface to serve as rolling raceway
6. Customizable options: OEM laser marking, surface strengthening treatment, special sealing configuration
   Ideal choice for compact mechanical transmission systems with limited installation envelope.

• Automated production line guiding and driving assemblies
• Hydraulic valves, small cylinder moving components
• Textile machinery and packaging machine rotary parts
• Small transmission units and miniature clutch mechanisms
• Light-duty machine tool auxiliary supporting structures
• Reciprocating and rotary machinery demanding compact layout

• 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 shaft hardness and machining requirements guidance
• Sufficient bulk stock for automation machinery distributors
• We supply stable dimensional accuracy, reliable performance and long-term cooperative support.

• Bearing steel strip blanking and deep drawing forming
• Precision superfinishing for needle rollers
• Assembly clearance inspection and pre-lubrication processing
• Full dimension tolerance and load performance testing

If you need HK4020 drawn cup needle roller bearings:

Send inquiry to obtain below supports:

• Quick formal quotation within 24 hours
• Professional shaft machining and hardness requirement suggestion
• Optional closed end alternative solutions
• Competitive factory direct price
  Contact our sales team for full technical datasheets and formal offer.