Precision Bearings for Railway & Machine Tools
TMX Bearings – a leading Chinese manufacturer of high-precision bearings for high-speed spindles, railway rolling stock, and CNC machine tools.
ISO 4
Accuracy Class (P4 / SP)
Our Core Product Range
Designed for high rigidity, low friction, and extreme precision in demanding applications.
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Angular Contact Ball Bearings
15° & 25° contact angles, P4/P2 accuracy, for high-speed spindles.
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Cylindrical Roller Bearings
N10, NN30 series with tapered bore, high radial rigidity.
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Ball Screw Support Bearings
7602, 7603, BS, BSS series, 60° contact, sealed options.
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Double-Direction Thrust Bearings
2344, 2347 series, for axial load with high stiffness.
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Rotary Table Bearings
Axial/radial combined bearings for precision rotary tables.
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Precision Locknuts
KMB series for secure shaft positioning.
Product Portfolio
Explore our complete range of high-precision bearings for railway, machine tool, and spindle applications.
Angular Contact Ball Bearings
- • 718, 719, 70, 72 series (15° / 25°)
- • P4 / P4A / P2 accuracy
- • Matched sets (DB, DF, DT)
- • Sealed versions (2RZ) available
Cylindrical Roller Bearings
- • N10 (single row), NN30 (double row)
- • Tapered bore 1:12 for preload adjustment
- • High radial load capacity
Ball Screw Support Bearings
- • 7602 / 7603 standard metric
- • BS (non-metric), BSS (inch)
- • 60° contact angle, high axial rigidity
- • Sealed (2RZ) and open types
Other Precision Products
- • Double-direction thrust bearings (2344, 2347)
- • High-speed angular contact thrust (70X2 B/DB)
- • Rotary table bearings (YRT series)
- • Precision locknuts (KMB type)
📌 All bearings are available in multiple accuracy classes (P5, P4, P4A, P2, SP, UP) and with various preload options.
Product Catalog
Technical data for key bearing series. Full catalog available upon request.
Angular Contact Ball Bearings – 719 Series (15° / 25°)
| Designation | d (mm) | D (mm) | B (mm) | Cr (kN) | C0r (kN) | Limiting speed (r/min) | Weight (kg) |
|---|
| 71900 C | 10 | 26 | 8 | 4.0 | 2.4 | 67000 | 0.02 |
| 71901 C | 12 | 28 | 8 | 5.0 | 3.0 | 60000 | 0.02 |
| 71902 C | 15 | 32 | 9 | 5.3 | 3.3 | 50000 | 0.03 |
| 71903 C | 17 | 35 | 10 | 5.7 | 3.9 | 47000 | 0.04 |
| 71904 C | 20 | 42 | 12 | 9.6 | 6.3 | 38000 | 0.06 |
| 71905 C | 25 | 47 | 12 | 11.2 | 8.7 | 34000 | 0.08 |
Cylindrical Roller Bearings – NN30 Series (tapered bore)
| Designation | d (mm) | D (mm) | B (mm) | Cr (kN) | C0r (kN) | Limiting speed (r/min) |
|---|
| NN3010 | 50 | 80 | 23 | 62.0 | 78.0 | 11000 |
| NN3012 | 60 | 95 | 26 | 82.0 | 110.0 | 9000 |
| NN3014 | 70 | 110 | 30 | 105.0 | 150.0 | 7500 |
| NN3016 | 80 | 125 | 34 | 135.0 | 200.0 | 6500 |
Ball Screw Support Bearings – 7602 / 7603 Series
| Designation | d (mm) | D (mm) | B (mm) | Cr (kN) | C0r (kN) | Limiting speed (r/min) |
|---|
| 760201 TN | 12 | 32 | 10 | 11.6 | 12.5 | 17000 |
| 760202 TN | 15 | 35 | 11 | 12.5 | 15.0 | 15000 |
| 760203 TN | 17 | 40 | 12 | 16.6 | 20.1 | 13000 |
| 760204 TN | 20 | 47 | 14 | 19.3 | 25.0 | 12000 |
| 760205 TN | 25 | 52 | 15 | 22.5 | 30.5 | 11000 |
📘 Full catalog includes: 718, 719, 70, 72 series; N10, NN30; 2344, 2347 thrust; 70X2 B/DB; YRT rotary table; KMB locknuts; and more.
Contact us for complete dimensional tables, preload data, and mounting instructions.
Contact Us
Get in touch for product inquiries, technical support, or a custom quotation.
