GQZ S7008ACDGA/P4A Super‑Precision Angular Contact Ball Bearing 40×68×15mm 25° Universal Match Spindle Bearing
The S7008ACDGA/P4A single‑row super‑precision angular contact ball bearing adopts 25° ACD contact angle, GA universal‑match configuration and strict P4A precision tolerance. It can bear combined radial and single‑direction axial loads, supports DB, DF, DT duplex mounting. Features low run‑out, high rigidity and excellent high‑speed performance, specially developed for high‑precision machine‑tool spindle rotary systems.
It is widely used for CNC machine spindles, grinding equipment and high‑precision automation rotary units.
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- Model
- S7008ACDGA/P4A
- Inner Diameter (ID)
- 40 mm
- Outer Diameter (OD)
- 68 mm
- Width B
- 15 mm
- Contact Angle
- 25°
- Structure
- Single‑row open‑type angular contact ball bearing, GA universal match, P4A precision grade
- Material
- GCr15 chrome bearing steel
- Cage
- Polyamide resin cage
- r min
- 1 mm
- Approx Net Weight
- 0.182 kg
- Dynamic Load Cr
- 21200 N
- Static Load C0r
- 16400 N
- Limiting Speed(Grease)
- 17000 rpm
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- P4A ultra‑precision tolerance guarantees low run‑out for high‑accuracy spindle working conditions
- 25‑degree contact angle balances structural rigidity, load capacity and high‑speed rotating property
- GA universal‑match design allows direct DB / DF / DT combined installation without additional spacer grinding
- Open‑type design supports grease lubriion or oil‑air circulating lubriion for continuous high‑speed operation
- High rigidity structure reduces spindle deflection under cutting load
- Custom design available (hybrid ceramic balls, pre‑matched bearing sets, OEM laser marking)
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This super‑precision bearing is widely used in:
- CNC machine tool main spindle and grinding machine core rotary assemblies
- High‑speed machining centers, high‑frequency motors and precision testing instruments
- Precision robotic joint and semiconductor processing rotary mechanisms
- Various high‑accuracy rotary devices requiring universal‑match P4A grade bearing
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- 25+ years experience in industrial super‑precision angular contact ball bearing manufacturing
- Exported to 50+ countries worldwide
- Rich experience in OEM GA universal‑match P4A‑grade precision bearing custom projects
- Strict P4‑level run‑out, contact angle and high‑speed simulation inspection 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
- P4A‑grade run‑out detection, universal‑match pairing check 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 super‑precision spindle bearing matching solution suggestions
- Competitive factory price
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Q1: What does GA stand for?
GA means universal‑match bearing for direct DB, DF, DT duplex installation.
Q2: What is your delivery time?
P4A super‑precision angular contact 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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Have questions about our products or want to discuss a custom order? Our team is ready to help you.