Ball Bearing Size Chart – 7000 Series (Angular Contact)
Ball Bearing Size Chart – 7000 Series (Angular Contact)
What Are 7000 Series Ball Bearings?
The 7000 Series represents the standard single-row angular contact ball bearing design, engineered for applications requiring radial loads combined with significant axial loads in one direction. These precision bearings enable high-speed spindle drives, machine tool applications, and precision positioning equipment where reliability and tolerance matter.
Contact Angle Selection
The 7000 Series is available in three contact angle variants, each optimized for different load and speed profiles:
- 7000C (15° contact angle): Ideal for high-speed, low-to-moderate axial load applications. Lowest friction, highest speed capability, commonly used in spindles and precision grinding applications.
- 7000AC (25° contact angle): Balanced design for mixed radial-axial loads. Medium-speed, medium-load applications. The most versatile variant for general industrial use.
- 7000B (40° contact angle): Engineered for heavy axial loads with moderate speeds. Best choice when axial load capacity is critical; lower maximum speed than 15° or 25° variants.
Standard Size Range
7000 Series bearings are available from 10 mm bore through 130 mm and beyond. Larger bore sizes (beyond 130 mm) are produced on request for specific OEM applications.
7000 Series Size Chart
| Bearing Model | Bore (mm) | OD (mm) | Width (mm) | Dynamic Load Rating (kN) [VERIFY] | Static Load Rating (kN) [VERIFY] | Max Speed – Grease (rpm) [VERIFY] |
|---|---|---|---|---|---|---|
| 7000C | 10 | 26 | 8 | 5.3 | 2.45 | 47,800 |
| 7000AC | 10 | 26 | 8 | 5.0 | 2.35 | 42,000 |
| 7000B | 10 | 26 | 8 | 4.65 | 2.15 | 38,000 |
| 7001C | 12 | 28 | 8 | 5.8 | 2.75 | 43,000 |
| 7002C | 15 | 32 | 9 | 7.2 | 3.55 | 38,000 |
| 7003C | 17 | 35 | 10 | 8.5 | 4.25 | 34,000 |
| 7004C | 20 | 42 | 12 | 11.2 | 5.8 | 28,000 |
| 7005C | 25 | 47 | 12 | 12.6 | 6.9 | 25,000 |
| 7006C | 30 | 55 | 13 | 16.5 | 9.2 | 20,000 |
| 7007C | 35 | 62 | 14 | 19.8 | 11.5 | 18,000 |
| 7008C | 40 | 68 | 15 | 23.5 | 14.2 | 16,000 |
Material & Construction
- Ball Material: Chrome steel (AISI 52100)
- Race Material: Through-hardened chrome steel
- Cage Material: Available in polyamide (standard), brass, or machined steel
- Seals: Open, shielded (Z), or sealed (RS/2RS) options
Operating Parameters
Temperature Range: -30°C to +110°C (standard)
Lubrication: Grease (standard) or oil bath. Speed ratings assume grease lubrication; oil-bath applications can sustain higher speeds at the cost of increased maintenance intervals.
Preload: Angular contact bearings are typically installed in opposed pairs with preload to eliminate internal radial play. Preload magnitude affects speed capability and service life — consult mounting documentation for load-specific recommendations.
Why Angular Contact?
Unlike radial-only ball bearings (such as deep-groove 6000 Series), angular contact bearings are specifically designed to accept combined radial and axial loads simultaneously. The angled contact surface between ball and raceway distributes forces more efficiently under axial load, making them essential for:
- Spindle assemblies (machine tools, milling machines)
- Centrifugal pumps and compressors
- Conveyor systems with thrust requirements
- Vehicle transmissions and differentials
- Industrial gearboxes
- Rotating shafts in power transmission
Selection Guidelines
- Determine load direction: Angular contact bearings are directional — they prefer axial load in one direction. For bidirectional axial loads, use back-to-back or face-to-face pairs.
- Check speed capability: High-speed applications (>15,000 RPM) favor the 7000C (15° contact angle). Lower speeds can tolerate higher contact angles for greater axial capacity.
- Calculate load margins: Divide expected operating load by the bearing's dynamic load rating. A safety factor of 2.0 to 3.0 is typical for industrial environments.
- Plan for preload: Install paired bearings with preload per manufacturer guidance to minimize play and extend life.
Availability & Lead Times
Smaller sizes (10–20 mm bore) are typically in stock. Larger bore sizes and specialty variants (sealed, shielded, or ceramic ball) may require 2–5 business days. Confirm inventory before committing to a schedule.
Mounting & Service
Proper mounting is critical. Mounting clearances, preload fit, and alignment all affect bearing life and noise. Refer to SKF, NSK, or FAG technical guides for your specific bearing variant and load case.
Common bearing suppliers include SKF, NSK, FAG (Schaeffler), and Timken, all offering 7000 Series with comparable dimensional and load specifications.
Find 7000 Series Angular Contact Bearings
Shop 7000 Series bearings in stock for immediate shipment. Filter by bore size, contact angle, or part number on MROSupply.com.
Pair your bearing selection with mounting hardware, seals, and lubricants — all in one order, shipped fast.