GQZ 40TAC90BSUC10PN7B Super‑Precision Ball Screw Support Bearing 40×90×20mm 60° Contact Angle SU Single Unit
The 40TAC90BSUC10PN7B single‑row super‑precision thrust angular contact ball bearing features 60‑degree large contact angle, SU free‑combination single unit, C10 standard preload and PN7B strict P4‑equivalent precision grade It delivers outstanding axial rigidity, mainly bears heavy unidirectional axial load together with partial radial load. Open‑type structure supports DB / DF duplex combination mounting, specially designed for CNC machine ball screw support units.
It is widely used for ball screw drives, CNC lathes, machining centers and precision automation equipment.
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- Model
- 40TAC90BSUC10PN7B
- Inner Diameter (ID)
- 40 mm
- Outer Diameter (OD)
- 90 mm
- Width
- 20 mm
- Contact Angle
- 60°
- Structure
- Single‑row thrust angular contact ball bearing, SU single unit, C10 standard preload, PN7B precision grade
- Material
- GCr15 chrome bearing steel
- Cage
- Stamped steel cage
- r min
- 1.5 mm
- Precision Grade
- Equivalent to ISO P4
- Approx Net Weight
- 0.68 kg
- Limiting Speed(Grease)
- 4000 rpm
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- 60° large contact angle provides exceptional axial rigidity for ball‑screw high‑precision positioning
- SU free‑combination unit allows flexible DB / DF duplex matching without extra spacer processing
- C10 standard pre‑load eliminates internal clearance, improves positioning accuracy and anti‑vibration performance
- PN7B special dimension tolerance control guarantees low run‑out for high‑accuracy drive systems
- Open‑type design adapts to grease or oil‑air lubriion for continuous precision operation
- Custom design available (different preload classes, OEM laser marking)
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This super‑precision ball screw support bearing is widely used in:
- CNC machine tool ball screw support and feed‑drive assemblies
- Machining centers, precision lathes and grinding equipment transmission units
- Precision automation positioning machinery and semiconductor processing equipment
- Various high‑rigidity devices requiring heavy axial‑load precision bearing
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- 25+ years experience in industrial super‑precision TAC‑series ball screw support bearing manufacturing
- Exported to 50+ countries worldwide
- Rich experience in OEM 40TAC90BSUC10PN7B precision bearing custom projects
- Strict PN7B‑level dimensional tolerance, preload inspection and rotation performance test before shipment
- Fast response within 24 hours
- Stable supply for long‑term cooperation
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- Raw material hardness inspection
- Precision grinding & superfinishing raceway machining
- Heat treatment metallurgy control
- PN7B precision tolerance detection, preload checking and rotation smoothness testing
- Final dimensional & appearance inspection before delivery
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Looking for a reliable bearing supplier?
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- Fast quotation within 24 hours
- Technical support from engineers
- Custom ball screw support bearing matching solution suggestions
- Competitive factory price
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Q1: What do SU, C10 and PN7B mean?
SU means single free‑combination unit; C10 is standard preload; PN7B stands for P4‑equivalent special precision tolerance
Q2: What is your delivery time?
Super‑precision ball screw support bearings:10‑18 days
Custom special specifiion products: depending on specifiions
Q3: Do you support bulk orders?
Yes, we provide stable supply for long‑term cooperation.
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