INA ZKLFA 1563 2RS - Axial Angular Contact Ball Bearing

INA ZKLFA 1563 2RS is a double-row axial angular contact ball bearing with flange and fixing holes, specifically designed for precision screw-drive bearing arrangements. The bearing has a 15 mm bore, 42 mm bearing outside diameter, 25 mm bearing width and 63 mm flange diameter. The 2RS version is sealed and provides high axial rigidity for precision positioning and feed systems.

Technical Specifications

Manufacturer: INA / Schaeffler
Designation: ZKLFA1563-2RS
Bearing type: Axial angular contact ball bearing
Design: Double row, double direction
Application: Screw drives
Bore diameter d: 15 mm
Bearing outside diameter D: 42 mm
Bearing width B: 25 mm
Flange diameter D1: 63 mm
d1: 28 mm
B1: 10 mm
d2: 6.8 mm
Pitch circle J: 53 mm
Dimension A: 45 mm
Seal design: 2RS
Mounting: Flange with fixing holes
Reference mass: approx. 0.31 kg

Catalogue Load Ratings

Official Schaeffler catalogue data for ZKLFA1563-2RS specifies:

Basic dynamic axial load rating Ca: 18,000 N
Basic static axial load rating C0a: 28,500 N
Axial fatigue load limit Cua: 1,300 N
Limiting speed with grease lubrication: 8,200 rpm
Frictional torque MR: 0.2 Nm

ZKLFA Flanged Design

The ZKLFA series combines a double-row axial angular contact ball bearing with an integrated mounting flange. This allows the bearing unit to be attached directly to the adjacent structure through its fixing holes.

The design is intended specifically for screw-drive support arrangements, where precise axial guidance and high rigidity are required.

Double-Direction Axial Load Capacity

The angular contact arrangement enables ZKLFA1563-2RS to support axial loads acting in both directions.

This makes the bearing suitable for locating precision screw drives where the direction of axial force changes during machine operation.

2RS Sealed Version

The 2RS suffix identifies the sealed execution of the ZKLFA bearing.

Sealing helps retain lubricant inside the bearing and limits the ingress of contaminants into the rolling contact system, an important consideration in precision screw-drive and machine-tool applications.

Mounting Dimensions

Key catalogue dimensions for installation are:

d: 15 mm
D: 42 mm
B: 25 mm
D1 flange: 63 mm
J: 53 mm
d2: 6.8 mm
da min.: 20 mm
Da max.: 34 mm
Reference mass: 0.31 kg

The designation 1563 should therefore not be interpreted as a conventional 15x63 mm bearing size. The bearing body has an outside diameter of 42 mm, while 63 mm is the flange diameter.

Typical Applications

INA ZKLFA 1563 2RS is designed primarily for precision screw-drive bearing arrangements used in:

• ball screw systems
• CNC machine tools
• machining centres
• linear positioning axes
• precision feed systems
• industrial automation
• production machinery
• positioning equipment

Identification Data

For replacement or engineering identification, verify:

Brand: INA
Designation: ZKLFA1563-2RS
Bore: 15 mm
Bearing OD: 42 mm
Width: 25 mm
Flange diameter: 63 mm
Design: Double-row axial angular contact
Sealing: 2RS
Mounting: Integrated flange with fixing holes
Application: Screw drives

FAQ - INA ZKLFA 1563 2RS

What type of bearing is INA ZKLFA1563-2RS?
It is a double-row axial angular contact ball bearing with an integrated flange, designed for screw-drive bearing arrangements.

What are the dimensions of ZKLFA 1563 2RS?
The bore is 15 mm, bearing outside diameter 42 mm, bearing width 25 mm, and flange outside diameter 63 mm.

Does the 63 in ZKLFA1563 mean a 63 mm bearing outside diameter?
No. The bearing body outside diameter is 42 mm. The integrated flange has a diameter of 63 mm.

What is the dynamic axial load rating?
The basic dynamic axial load rating Ca is 18 kN.

What is the static axial load rating?
The basic static axial load rating C0a is 28.5 kN.

What is the limiting speed?
Schaeffler specifies a limiting speed of 8,200 rpm with grease lubrication.

How much does INA ZKLFA1563-2RS weigh?
The catalogue reference mass is approximately 0.31 kg.