7306AC Single Row Angular Contact Ball Bearings
The 7306AC is a single - row angular contact ball bearing, designed
around "composite load bearing + high - speed precision operation",
and suited for scenarios demanding high axial rigidity and
rotational speed.
I. Core Parameters & Structure
| Aspect | Details |
|---|
| Dimensions | Bore: 30 mm (06*5 = 30 mm in model "7306"); Outer diameter: 72 mm;
Width: 19 mm. |
| Contact Angle | α=25° (AC type, superior axial load capacity vs. 15° C type, fit
for medium-high axial loads). |
| Rated Loads | Dynamic load Cᵣ=32.8 kN; Static load C₀ᵣ=20.4 kN (supports
medium-heavy loads). |
| Limit Speed | Grease lubrication: ≤8500 rpm; Oil lubrication: ≤12000 rpm
(low-friction design enables high speed). |
II. Design Highlights & Advantages
1. Composite Load Adaptation
The single-row angular contact structure handles radial +
unidirectional axial loads (25° contact angle boosts axial capacity
over 15° C type).
2. High Speed & Low Friction
Optimized ball-raceway contact + optional
brass/steel/nylon/phenolic cages reduce friction, suiting
high-frequency motors, machine tool spindles, etc.
3. Precision & Rigidity
Manufactured to P5 grade or higher, the 25° contact angle enhances
axial rigidity and reduces vibration, ideal for centrifugal
separators, indexers, etc.
III. Typical Applications
- Industrial Equipment: Machine tool spindles (cutting),
high-frequency motors (driving), gas turbines (power), centrifugal
separators (high-speed separation);
- Transportation: Front wheels of small cars (steering), differential
pinion shafts (transmission);
- General Machinery: Booster pumps (fluid transfer), food machinery
(processing), low-noise cooling towers (ventilation).
