This NSK 7000A5TRSULP3 is a high-performance super precision angular contact bearing engineered for ultra-smooth rotation, minimal vibration, and superior speed capability. Designed for use in machine tool spindles, high-speed motors, and precision equipment, this bearing offers a perfect combination of rigidity and accuracy.
Its 25-degree contact angle (A5) provides increased axial load capacity while maintaining excellent radial stiffness—making it ideal for demanding spindle applications where both speed and load balance are critical. The phenolic cage (TR) ensures low weight, reduced heat generation, and excellent performance at high rotational speeds.
Typical Applications
CNC machine tool spindles (milling, turning, grinding)
High-speed precision motors and electric spindles
Robotics and automation systems
Measuring and inspection instruments
Aerospace and semiconductor machinery
Boundary Dimensions
| d |
10 |
mm |
Bore diameter |
| D |
26 |
mm |
Outside diameter |
| B |
8 |
mm |
Width |
| r(min.) |
0.3 |
mm |
Chamfer Dimension |
| r1(min.) |
0.15 |
mm |
Chamfer Dimension |
Basic Load Ratings
| Cr |
6.50 |
kN |
Basic Dynamic Load Rating |
| C0r |
2.41 |
kN |
Basic Static Load Rating |
Speeds
| Grease |
55600 |
min-1 |
Limiting Speed |
| Oil (Oil-air) |
83400 |
min-1 |
Limiting Speed |
Dimensions
|
A5: 25° |
|
Contact Angle |
| a |
8.2 |
mm |
Effective Load Center |
Abutment and Fillet Dimensions
| da(min.) |
12.5 |
mm |
Diameter of Shaft Abutment |
| Da(max.) |
23.5 |
mm |
Diameter of Housing Abutment |
| Db(max.) |
24.8 |
mm |
Diameter of Housing Abutment |
| ra(max.) |
0.3 |
mm |
Radius of Shaft or Housing Fillet |
| rb(max.) |
0.15 |
mm |
Radius of Shaft or Housing Fillet |
Performance
| Pa |
2.48 |
kN |
Permissible Axial Load |
Preload,Rigidity(DB and DF arrangement)
|
Preload |
Axial Rigidity |
Measured axial clearance |
| EL |
17N |
29N/μm |
1μm |
| L |
43N |
41N/μm |
-2μm |
| M |
78N |
52N/μm |
-5μm |
| H |
153N |
68N/μm |
-10μm |
Additional information
|
0.12 |
g/brg |
Recommended Grease Quantities |
Mass
Why choose Bearing King for this product?
At Bearing King we specialise in high-precision bearings and spindle-grade components, offering genuine NSK product, UK stock availability, and expert support to help you select the correct bearing solution for your machine or application.
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1. You may return an unused item in new condition unless faulty within 30 days of receipt. Damaged or used goods cannot be refunded.
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4. Once we receive the package and the goods are checked, we will refund you by the payment method used when the order was placed.
5. Please allow 3-5 days for your return to be processed or exchange to be sent.
