F6904-2RS Integral Flanged Mini Deep Groove Ball Bearing Double Lip 2RS Rubber Seal 20x37x9mm Automation Positioning Equipment

The F6904-2RS is an integrated flanged miniature deep groove ball bearing with one-piece positioning flange and double-sided 2RS rubber lip seals. Standard dimension 20×37×9mm, capable of bearing radial load and slight bidirectional axial load. The outer flange limits axial displacement without extra retaining rings, double rubber seals block dust, cutting fluid and splashes, widely used in automation linear guides, miniature positioning shafts, packaging machinery and precision testing equipment.

• Integrated outer flange realizes one-step axial positioning, eliminates separate snap ring parts
• Double lip 2RS seals provide excellent dustproof and splash-proof performance for workshop environment
• Compact thin-wall structure fits narrow installation space of miniature automation assemblies
• Superfinished raceway and steel balls deliver low noise, smooth stable high-speed rotation
• High-hardness quenched steel improves wear resistance under frequent reciprocating motion
• Multiple optional variants: open F6904, metal shield F6904-ZZ, C3 clearance version
• ABEC-1 / ABEC-3 precision grades can be customized for optical precision instruments

This integral flange sealed bearing is widely applied in:

• Automation equipment linear guide positioning rollers and miniature rotary shafts
• Packaging machinery small transmission components, printing equipment sliding assemblies
• Laboratory precision testing instruments, optical adjustment miniature moving parts
• Small household appliances, 3C automated production line auxiliary rotating structures

• 25+ years experience in flanged miniature deep groove ball bearing manufacturing
• Exported to 50+ countries worldwide
• Rich OEM bulk order experience for F series 2RS sealed flange bearings
• Strict flange flatness, seal tightness and high-speed noise inspection before shipment
• Fast professional technical reply within 24 hours
• Stable mass supply for long-term automation equipment factory cooperation

• GCr15 bearing steel raw material incoming hardness inspection
• Ultra-precision grinding for raceway, steel balls and integral positioning flange
• Standard quenching & tempering heat treatment for uniform surface hardness
• 2RS seal splash resistance test, flange flatness detection and full dimensional recheck
• Anti-rust oil treatment and independent plastic packaging before delivery

Looking for integral flange double rubber sealed miniature F6904 deep groove ball bearing supplier?

• Fast factory quotation within 24h
• Professional automation positioning flange bearing technical parameter support
• Custom open type / metal shield & precision grade solution suggestions
• Competitive bulk wholesale factory price

• Q1: What is the function of the integrated flange on F6904?

  The outer flange acts as axial stop, prevents bearing sliding without installing extra circlips.

• Q2: What different versions of F6904 can you supply?

  Open F6904, dust-proof metal shield F6904-ZZ, splash-proof sealed F6904-2RS and C3 clearance customized model.

• Q3: What is grease limiting speed of F6904-2RS?

  Grease lubrication limiting speed reaches 26000rpm for continuous stable high-speed running.