7002HTDF Pre-Matched DF Face-To-Face Duplex Angular Contact Bearing HT High Temp Nylon Cage 15x32x18mm Mini High Speed Spindle
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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| Specifiion | Detail |
|---|---|
| Model | 7002HTDF |
| Single Bearing Inner Diameter (d) | 15mm |
| Single Bearing Outer Diameter (D) | 32mm |
| Single Bearing Width (B) | 9mm |
| Duplex Total Assembly Width | 18mm |
| Min Fillet Radius r | 0.3mm |
| Min Fillet Radius r1 | 0.15mm |
| Contact Angle | 20° |
| Pairing Mode | DF face-to-face factory pre-matched duplex set |
| Cage Type | HT high temperature glass fiber reinforced nylon cage (ball guided) |
| Structure | Open single row angular contact ball bearing duplex set |
| Material | GCr15 high carbon chromium bearing steel |
| Single Basic Dynamic Load Cr | 7600N |
| Single Basic Static Load C0r | 6300N |
| Duplex Set Dynamic Load | 9400N |
| Duplex Set Static Load | 9500N |
| Grease Limiting Speed (Single) | 23000rpm |
| Oil Limiting Speed (Single) | 31000rpm |
| Duplex Set Approximate Net Weight | 0.06kg |
| Operating Temperature Range | -40℃ ~ +120℃ |
| Preload Grade | Standard heavy preload |
| Gear Type (if any) | None |
Full technical data and drawings available upon request
- 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
Get a Quote Now
Looking for a reliable HT high temp nylon cage factory pre-matched DF face-to-face duplex precision angular contact bearing supplier?
Send your inquiry to get:
- 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
Contact us now
- Q1: Can you provide custom duplex precision bearings?
Yes, we support OEM custom production based on pairing arrangement, preload force, seal and ceramic ball requirements.
- Q2: What is your delivery time?
Standard stock 7002HTDF duplex set: 7–12 working days
Custom ceramic ball / P4 ultra-precision products: 12–18 working days - Q3: Do you support bulk orders?
Yes, we provide stable continuous mass supply for long-term miniature high-speed precision equipment factory cooperation.
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Have questions about our products or want to discuss a custom order? Our team is ready to help you.