GQZ 7007CDB Back‑To‑Back DB Duplex Angular Contact Ball Bearing 35×62×26mm 15° Contact Angle Preloaded Spindle Bearing
The 7007CDB back‑to‑back (DB) duplex angular contact ball bearing is assembled by two pre‑ground single 7007CD bearings with 15‑degree CD contact angle. DB pairing structure provides excellent moment rigidity, bears combined radial load and bidirectional axial loads. Factory pre‑preloaded design avoids manual pairing error for high‑speed precision rotary equipment.
It is widely used for high‑speed machine tool spindles, high‑frequency motors and precision automation rotary platforms.
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- Model
- 7007CDB
- Inner Diameter (ID)
- 35 mm
- Outer Diameter (OD)
- 62 mm
- Total Set Width
- 26 mm
- Single bearing width
- 13 mm
- Contact Angle
- 15°
- Structure
- DB back‑to‑back duplex matched angular contact ball bearing
- Material
- GCr15 chrome bearing steel
- Cage
- Polyamide resin cage
- Clearance
- Pre‑loaded
- Precision Grade
- P0, P4 optional
- Approx Net Weight
- 0.19 kg
- Dynamic Load Cr
- 14200 N
- Static Load C0r
- 11100 N
- Limiting Speed(Grease)
- 15000 rpm
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- DB back‑to‑back matched structure delivers superior anti‑tilting capability and moment rigidity
- 15° CD contact angle balances high‑speed rotating performance and combined load capacity
- Factory pre‑ground matched set with fixed preload, saves on‑site pairing and adjustment work
- Capable of bearing radial load plus bidirectional axial thrust for accurate shaft positioning
- Open‑type construction adapts to circulating oil or grease lubriion for high‑speed operation
- Custom design available (P4 precision grade, hybrid ceramic balls, OEM laser marking)
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This bearing is widely used in:
- High‑speed machine tool spindles and grinding spindle core assemblies
- High‑frequency motors, precision testing instruments and rotary positioning equipment
- Robotic joint components and high‑speed light‑cutting processing machinery
- Multiple precision rotary mechanisms requiring high rigidity and bidirectional axial support
???? Ideal for customers looking for reliable and long‑life bearing solutions
- 25+ years experience in industrial bearing manufacturing
- Exported to 50+ countries worldwide
- Rich experience in OEM DB duplex matched angular contact bearing custom projects
- Strict duplex‑matching tolerance, 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
- Duplex matching tolerance, contact angle 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 duplex‑matched angular contact bearing matching solution suggestions
- Competitive factory price
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Q1: Can you supply single loose 7007CD bearing without DB pairing?
Yes, single open bearing and DF face‑to‑face matched sets are available.
Q2: What is your delivery time?
Standard duplex matched angular contact bearings:10‑18 days Custom high‑precision specifiion products: depending on specifiions
Q3: Do you support bulk orders?
Yes, we provide stable supply for long‑term cooperation.
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