Single Row Angular Contact Ball Bearing

Single Row Angular Contact Ball Bearing is engineered for high precision and speed applications where combined radial and axial loads are present. Manufactured by Adarsh Bearings Pvt. Ltd. under the Locus brand, these bearings are suitable for demanding industrial environments such as machine tools, gearboxes, motors, and pumps.

Brand: LOCUS
Manufacturer: Adarsh Bearings Pvt. Ltd.
Bearing Series: 70XX, 72XX, 73XX, 74XX
Material: Chrome Steel (GCr15), Stainless Steel (Optional)
Contact Angle Options: 15°, 25°, 30°, 40°
Seal Types: Open / ZZ (Metal Shield) / 2RS (Rubber Seal)
Precision Class: P0, P6, P5, P4 (as per ISO 492)
Applications: High-Speed and Axial Load-Bearing Applications
Certifications: ISO 9001:2015, CE, RoHS
Country of Origin: India

Description

1. Product Description

The Single Row Angular Contact Ball Bearing is engineered for high precision and speed applications where combined radial and axial loads are present. Manufactured by Adarsh Bearings Pvt. Ltd. under the Locus brand, these bearings are suitable for demanding industrial environments such as machine tools, gearboxes, motors, and pumps. They support thrust load in one direction and are often used in matched pairs.

2. Specifications

Parameter	Values
Bore Diameter (d)	10 mm to 150 mm
Outer Diameter (D)	30 mm to 300 mm
Width (B)	9 mm to 50 mm
Contact Angle	15°, 25°, 30°, 40°
Cage Material	Brass, Steel, or Nylon
Seal Type	Open / Metal Shield / Rubber Sealed
Precision Grades	P0, P6, P5, P4 (ISO 492)
Dynamic Load Rating	2.1 kN – 96 kN (varies with size)
Static Load Rating	1.3 kN – 78 kN
Max Speed	Up to 18,000 RPM

3. Working Principle

The bearing consists of inner and outer rings, a row of balls, and a cage. It is designed with a non-perpendicular contact angle that enables it to withstand combined loads (radial + axial). The axial load is supported only in one direction, which means correct orientation during installation is crucial.

4. Principle

Angular contact bearings work on the principle of angular contact load distribution. The internal geometry is designed such that the ball-race contact points are aligned at an angle to the bearing axis, allowing axial force to be transmitted through the ball and inner/outer ring in one direction.

5. Assembly

Bearings are usually preloaded for high precision.
Can be assembled in the following arrangements:
- Back-to-back (DB) – for axial rigidity.
- Face-to-face (DF) – for misalignment compensation.
- Tandem (DT) – for supporting high axial load in one direction.

6. Installation Process

Clean the housing & shaft thoroughly.
Check shaft & housing tolerances – usually h5 or h6 fit.
Heat the bearing slightly (80°C max) for thermal expansion fitting.
Mount using a press or heating plate, not a hammer.
Ensure correct preload and orientation.
If using pairs, maintain manufacturer-specified axial clearance.

7. Technical Specifications

Parameter	Range / Notes
Load Direction	Radial & Axial (One direction only)
Operating Temp	-30°C to +150°C
Noise Level	Z1, Z2, Z3
Lubrication	Grease or Oil (as per speed & application)
Vibration Grade	V1 to V4
Tolerances	ISO 492 / ABEC standards

8. Troubleshooting

Issue	Cause	Solution
Excessive Noise	Lack of lubrication, contamination	Re-lubricate, clean, seal system
High Temperature	Overload, poor lubrication	Check load, change grease, align shaft
Early Failure	Improper installation, preload issues	Follow standard mounting procedure
Axial Play	Wrong arrangement of matched pair	Use DB/DF/DT paired arrangements
Cage Cracks	Overspeed or incorrect fit	Match speed rating and tolerances

9. HS Code (Harmonized System Code)

HS Code: 84821010
Description: Ball bearings, single row (Angular Contact)
Chapter: 84 – Nuclear reactors, boilers, machinery and mechanical appliances

10. Frequently Asked Questions (FAQs)

Q1: Can Angular Contact Bearings take axial load in both directions?
→ No, single row bearings support axial load in one direction only. Use paired bearings for both directions.

Q2: Can I run these at high speed?
→ Yes. They’re designed for high-speed and precision use.

Q3: Are these suitable for vertical shafts?
→ Only when paired correctly (DF or DB configuration).

Q4: What preload options are available?
→ Light (L), Medium (M), Heavy (H) preload options available on request.

Q5: Are sealed options available?
→ Yes, options include Open, ZZ (Shielded), and 2RS (Rubber Sealed).

11. Applications