Super Precision Angular Contact Ball Bearings 71812 ACD/P4DBALT20

The 71812 ACD/P4DBALT20 is a super precision angular contact ball bearing with a 60mm bore and 78mm outer diameter, crafted from high-quality chrome steel. It features a 25° contact angle and comes in a matched pair for balanced performance.

This bearing handles radial loads up to 4680 lbf and spins smoothly at speeds up to 35,000 RPM. Its phenolic cage ensures durability while the open design allows for easy lubrication with grease.

The extra light preload (Class A) ensures minimal friction, making it ideal for high-precision applications. It operates reliably in temperatures from -30°C to 110°C.

Perfect for machine tools or spindle applications where precision and speed are crucial. Weighing just 0.2kg, it’s lightweight yet robust. Compliant with P4 tolerance standards for exceptional accuracy.

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Description

Features

Application

Q&A

Product Parameters

Part Number 71812 ACD/P4DBALT20
Brand TFL
Interchangeable SKF
Bore Dia 60 mm
Bore Dia Tolerance -0.004mm to 0
Outer Dia 78 mm
Outer Dia Tolerance -0.004mm to 0
Width 20 mm
Width Tolerance -0.2mm to 0
Ball Dia 5.556 mm
Ball Qty 28
Contact Angle 25°
Tolerance Class P4
System of Measurement Metric
Seal Type Open
Matched Arrangement 2 bearings <> DB
Number Of Bearings In Matched Set 2
Universal Matching Bearing No
Preload Extra light / Class A
For Load Direction Angular Contact
Ring Material Chrome Steel
Ball Material Chrome Steel
Cage Material Phenolic
Dynamic Radial Load 4680 lbf
Static Radial Load 5962 lbf
Lubrication Grease
Temperature Range - 30°C to 110 °C
Max Speed 35000 rpm
Weight 0.2 kg

Super Precision Angular Contact Ball Bearings 71812 ACD/P4DBALT20 dimension drawing

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Features

How Does 71812 ACD/P4DBALT20 Bearing Achieve Super Precision?

71812 ACD/P4DBALT20 Bearing features a 25° contact angle, optimised for handling combined radial and axial loads.

Its P4 tolerance class ensures high precision, making it suitable for demanding applications.

The matched arrangement of two bearings in a DB configuration provides extra stability and load distribution.

With a maximum speed of 35,000 rpm, it delivers reliable performance in high-speed operations.

Application

Industrial Uses of 71812 ACD/P4DBALT20 Bearing
This bearing is commonly used in high-speed machine tools, where its precision and angular contact design ensure accurate performance. The matched arrangement of two bearings provides stability in demanding industrial environments.

Where Is 71812 ACD/P4DBALT20 Bearing Used?
You’ll often find 71812 ACD/P4DBALT20 Bearing in automotive transmissions, where its extra light preload helps reduce friction. Its phenolic cage also offers durability under high rotational speeds.

Built for Heavy-Duty Use: 71812 ACD/P4DBALT20 Bearing
71812 ACD/P4DBALT20 Bearing excels in robotics, particularly in articulated arms requiring smooth motion. The chrome steel construction ensures long-lasting performance even with frequent directional changes.

Medical vs Industrial: Where 71812 ACD/P4DBALT20 Bearing Excels
In medical imaging devices, 71812 ACD/P4DBALT20 Bearing provides quiet operation essential for sensitive equipment. Meanwhile, industrial applications benefit from its high dynamic radial load capacity.

Automotive vs Aerospace: Applications of 71812 ACD/P4DBALT20 Bearing
For automotive systems, 71812 ACD/P4DBALT20 Bearing supports precise steering mechanisms. In aerospace, its P4 tolerance class meets the strict requirements for flight control systems.