Ebmotrix Bearings
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Bearing No. H7205C-2RZ-HQ1-SU-P4 - High-precision angular contact ball bearing specifically designed for spindle applications.
| Technical Specifications | |
|---|---|
| Inside Diameter (mm) | 25 |
| Outside Diameter (mm) | 52 |
| Width (mm) | 15 |
| Contact Angle | 15° |
| Seal Type | NBR |
| Rolling Element Material | Ceramics (Si3N4) |
| Tolerance Class | P4S |
| Product Weight | 0.130 kg |
| Type | Shaft Ø (mm) | D (mm) | B (mm) | Angle | Weight (kg) |
|---|---|---|---|---|---|
| H7200C-2RZ P4 | 10 | 30 | 9 | 15° | 0.032 |
| H7201C-2RZ P4 | 12 | 32 | 10 | 15° | 0.037 |
| H7202C-2RZ P4 | 15 | 35 | 11 | 15° | 0.044 |
| H7203C-2RZ P4 | 17 | 40 | 12 | 15° | 0.063 |
| H7204C-2RZ P4 | 20 | 47 | 14 | 15° | 0.103 |
| H7205C-2RZ P4 | 25 | 52 | 15 | 15° | 0.126 |
| H7206C-2RZ P4 | 30 | 62 | 16 | 15° | 0.202 |
| H7207C-2RZ P4 | 35 | 72 | 17 | 15° | 0.301 |
| H7208C-2RZ P4 | 40 | 80 | 18 | 15° | 0.372 |
| H7209C-2RZ P4 | 45 | 85 | 19 | 15° | 0.423 |
| H7210C-2RZ P4 | 50 | 90 | 20 | 15° | 0.446 |
This series of high-speed spindle bearings is widely utilized in:
Si3N4 (Silicon Nitride) ceramic balls are lighter and harder than steel balls, which reduces centrifugal force at high speeds, lowers friction, and allows for higher operating temperatures and longer service life.
P4 indicates a high level of precision according to ISO standards, surpassing standard P0 and P6 classes. It ensures minimal runout and high dimensional accuracy, which is essential for high-speed CNC spindles.
As a single-row angular contact bearing, it handles axial loads in one direction. However, when mounted in pairs (back-to-back or face-to-face), it can handle axial loads in both directions.
A 15° contact angle (denoted by 'C') is designed for high-speed applications where radial stiffness and high-speed stability are prioritized over heavy axial load capacity.
Phenolic resin cages are lightweight and have excellent strength-to-weight ratios. They also retain lubricant effectively, making them ideal for high-speed operation where thermal stability is critical.
Yes, the H7205C-2RZ comes pre-greased with high-quality L252 grease, specifically formulated for high-speed precision applications.
