INA ZKLF 3080 2RS 30x80x28 Axial Angular Contact Ball Bearing

INA ZKLF 3080 2RS is a double-direction axial angular contact ball bearing for screw drives with dimensions 30x80x28 mm. The ZKLF design combines high axial rigidity with the ability to support axial loads in both directions and radial loads. The bearing features seals on both sides and an outer ring with mounting holes for direct attachment to the adjacent structure.

Technical Specifications

Manufacturer: INA / Schaeffler
Designation: ZKLF3080-2RS
Current designation: ZKLF3080-2RS-XL
Bearing type: Axial angular contact ball bearing
Design: Double direction
Application: Screw drives
Bore diameter d: 30 mm
Outside diameter D: 80 mm
Width B: 28 mm
Dimensions: 30x80x28 mm
Sealing: 2RS, lip seals on both sides
Mounting: Outer ring with mounting holes
Performance class: X-life
Reference mass: approx. 0.731 kg

Catalogue Performance Data

For the current INA ZKLF3080-2RS-XL, Schaeffler specifies:

Basic dynamic axial load rating Ca: 32,000 N
Basic static axial load rating C0a: 64,000 N
Axial fatigue load limit Cua: 3,850 N
Limiting speed with grease lubrication: 5,000 rpm
Thermally safe operating speed: 2,200 rpm
Bearing frictional torque MR: 0.5 Nm
Reference mass: approx. 0.731 kg

These parameters are important when selecting the bearing for precision screw-drive support arrangements.

ZKLF Bearing Design for Screw Drives

The INA ZKLF series is specifically designed for the bearing arrangements of screw drives. Its double-direction angular contact construction provides axial guidance in both directions while maintaining the rigidity required in precision positioning systems.

The bearing can also support radial loads. This allows a compact bearing arrangement to perform several functions within a single precision bearing unit.

Direct Flange Mounting

A characteristic feature of the ZKLF design is the mounting-hole arrangement in the outer ring. This enables the bearing to be mounted directly to the adjacent structure without requiring a separate retaining flange.

For this size, the mounting arrangement uses 6 mounting positions with M6 screws.

This feature simplifies the construction of screw-drive bearing supports and provides a defined axial location of the bearing.

2RS Sealed Design

The suffix 2RS identifies a bearing equipped with lip seals on both sides.

The seals help protect the internal rolling contact system against contamination while retaining lubricant inside the bearing. This is particularly relevant in machine-tool and linear-motion environments where precision bearing performance depends on controlled lubrication and cleanliness.

Dimensions and Mounting Data

Key dimensions:

d: 30 mm
D: 80 mm
B: 28 mm
da min.: 40 mm
Da max.: 53 mm
Mounting screws: M6
Number of mounting positions: 6

Dimensional tolerances include:

Bore diameter tolerance: 0 / -0.005 mm
Outside diameter tolerance: 0 / -0.010 mm
Width tolerance: 0 / -0.25 mm

Typical Applications

INA ZKLF 3080 2RS is primarily intended for precision screw-drive bearing arrangements used in:

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

Its combination of bidirectional axial load capacity, rigidity and direct mounting makes the ZKLF series particularly suitable for precision drive systems.

ZKLF3080-2RS Replacement Identification

When identifying or replacing this bearing, verify:

Brand: INA / Schaeffler
Series: ZKLF
Designation: ZKLF3080-2RS
Current designation: ZKLF3080-2RS-XL
Dimensions: 30x80x28 mm
Design: Double-direction axial angular contact
Sealing: 2RS
Mounting: Outer ring with mounting holes
Application: Screw drives

The dimensions alone should not be used to confirm interchangeability. Precision class, preload, sealing arrangement and mounting configuration should also correspond to the application requirements.

FAQ - INA ZKLF 3080 2RS

What are the dimensions of INA ZKLF 3080 2RS?
The bearing dimensions are 30x80x28 mm, with a 30 mm bore, 80 mm outside diameter and 28 mm width.

What type of bearing is ZKLF3080-2RS?
It is a double-direction axial angular contact ball bearing specifically designed for screw drives.

What does 2RS mean on ZKLF3080-2RS?
The 2RS suffix indicates lip seals on both sides of the bearing.

Can ZKLF3080-2RS support axial load in both directions?
Yes. Its double-direction construction is designed to support axial loads acting in either direction.

Can INA ZKLF 3080 2RS carry radial loads?
Yes. In addition to bidirectional axial loads, the bearing can support radial loads within its specified operating limits.

What is the dynamic axial load rating?
The basic dynamic axial load rating Ca is 32 kN.

What is the static axial load rating?
The basic static axial load rating C0a is 64 kN.

What is the limiting speed of ZKLF3080-2RS?
The specified limiting speed with grease lubrication is 5,000 rpm.

Does ZKLF3080-2RS have mounting holes?
Yes. The outer ring incorporates mounting holes for direct attachment. This size uses 6 mounting positions with M6 screws.