The 7002HTDF is factory pre-ground matched DF face-to-face duplex angular contact ball bearing. HT stands for high temperature reinforced glass fiber nylon cage, with standard 20° contact angle open design. DF face-to-face pairing structure delivers stable bidirectional axial rigidity and strong anti-tilting capacity, specially designed for miniature high-speed spindles, precision testing equipment and small high-speed rotary shafts requiring high positioning accuracy and low heat generation.

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• HT high-temperature nylon cage features low rotation inertia, anti-deformation and stable lubriion under continuous ultra-high-speed operation
• DF face-to-face duplex pairing widens load support span, excellent anti-overturn performance to resist shaft tilting and deflection
• Factory unified pre-grinding matching eliminates on-site pairing errors, consistent preload force and stable rotational runout
• 20° medium contact angle balances high limiting speed and reliable bidirectional axial load bearing capacity
• Superfinished ultra-precision raceway and steel balls suppress vibration, noise and thermal deformation for precision machining
• Multiple customizable options: P4/P5 ultra-precision grade, ceramic hybrid balls, DB back-to-back pairing, sealed dust-proof version
• Standard metric miniature size, fully interchangeable with mainstream small high-speed spindle replacement bearing sets

Improve miniature equipment machining precision, reduce thermal expansion deviation and extend continuous high-speed service cycle

This high-temperature DF duplex precision bearing set is widely used in:

• Mini high-speed engraving & milling machine spindle rotary support assemblies
• Precision optical testing instruments and small high-speed positioning rotary shafts
• Micro high-speed motors, dental equipment spindles and miniature grinding heads
• Automated small precision automation equipment and laboratory testing rotary components

Ideal for customers seeking compact high-rigidity ultra-high speed duplex precision spindle bearing solutions

• 25+ years experience in high temp nylon cage duplex precision angular contact bearing manufacturing
• Exported to many countries worldwide
• Rich OEM bulk order experience for pre-matched DF miniature spindle bearing sets
• Strict full-process preload consistency, rotational runout and high-speed temperature rise inspection before shipment
• Fast professional engineer technical response within 24 hours
• Stable mass supply for long-term precision engraving machine and miniature automation equipment factory cooperation

We focus on stable low-heat high-rigidity ultra-high speed rotation performance and reliable long-term partnership

• GCr15 bearing steel raw material composition and hardness inspection
• Ultra-precision superfinishing grinding for 20° angular raceway and steel balls
• Standard quenching & tempering heat treatment control
• DF duplex pairing preload test, dimensional tolerance and high-speed aging temperature detection
• Independent dust-proof anti-rust oil treatment and separate plastic packaging for each duplex set

Ensuring consistent smooth high-rigidity low-heat ultra-high speed rotation performance for every bearing set

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Looking for a reliable HT high temp nylon cage factory pre-matched DF face-to-face duplex precision angular contact bearing supplier?

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• Fast quotation within 24 hours
• Professional engineer technical support
• Custom preload grade, ceramic ball, sealing and high precision tolerance solution suggestions
• Competitive factory wholesale price

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