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INA

INA ZKLF2068-2RS-2AP-XL Axial Angular Contact Ball Bearing 20 × 68 × 56 mm

Angular Contact Ball Bearings

Axial Angular Contact Ball Bearing

From US$578.84

Excl. VAT

ina:ZKLF2068-2RS-2AP-XLUS$578.84

In stockEstimated delivery: 17 Jun 2026 (domestic stock)

EX-WORKS (Incoterms 2020) Seoul, Korea — Buyer arranges freight, duties, and insurance.

Category: Axial Angular Contact Ball Bearing
Dimensions: 20x68x56mm

Overview

INA ZKLF2068-2RS-2AP-XL Axial Angular Contact Ball Bearing is a precision bearing for screw drives and spindle support positions requiring accurate axial location and high rigidity. It provides low friction and repeatable positioning in ball screws, lead screws, and machine tool feed axes.

The design uses balls with a large contact angle, precision raceways, and controlled preload. Flanged or cylindrical outer-ring styles such as ZKLF and ZKLN can be selected according to the mounting interface.

Key features

High axial rigidity and positioning accuracy
Low friction for precision feed motion
Preload reduces backlash
Optimized for ball screw support

Typical applications

Ball screw support bearings
Machine tool feed axes
Precision linear actuators
Semiconductor and automation equipment

Selection guidance

Select by screw shaft diameter, preload, precision class, flange requirement, speed, and target positioning accuracy.

Symbol	Value	Description
d	20 mm	Bore diameter
	0 mm	Bore diameter upper tolerance
	-0,005 mm	Bore diameter lower tolerance
D	68 mm	Outside diameter
	0 mm	Outside diameter upper tolerance
	-0,01 mm	Outside diameter lower tolerance
B	56 mm	Width
	0 mm	Width upper tolerance
	-0,5 mm	Width lower tolerance
C_a	46.000 N	Basic dynamic load rating, axial
C_0a	94.000 N	Basic static load rating, axial
C_ua	5.700 N	Fatigue load limit, axial
n_{G Grease}	6.600 1/min	Limiting speed for grease lubrication
n_ϑ	3.000 1/min	Thermally safe operating speed
M_R	0,45 Nm	Bearing frictional torque
≈m	1,14 kg	Weight

Symbol	Value	Description
d₁	34,5 mm	Rib diameter inner ring
r_min	0,3 mm	Minimum chamfer dimension
r_{1 min}	0,6 mm	Minimum chamfer dimension
J	53 mm	Pitch circle diameter fixing holes
d₂	6,8 mm	Fixing holes diameter
b	3 mm	Width of extraction slot
I	47 mm	Distance of extraction slot
n	7	Pitch quantity of fixing holes
t	45 °	Pitch separation angle of fixing holes
a	60 °	Contact angle

Item	Code	Description
Number of bearings	2AP	Axial angular contact ball bearings, matched pair
Sealing	2RS	Contact lip seals on both sides
Tolerance class	Standard

Symbol	Value	Description
D_{a max}	43 mm	Maximum diameter of housing
d_{a min}	25 mm	Minimum diameter shaft
t₁	0,1 mm	Position tolerance of bore in the housing
	M6X70	Size of fixing screws
n_a	7	Number of holes in adjacent construction
t_a	45 °	Pitch separation angle of holes in adjacent construction
	M6	Connection thread for lubrication

Symbol	Value	Description
T_min	-30 °C	Operating temperature min.
T_max	120 °C	Operating temperature max.

Radial load
Axial load in one direction
Axial load in two directions
Lifetime lubrication, freedom from maintenance
Grease Lubrication
Sealed on both sides

Code	Description
1.150 N/µm	Rigidity axial
320 Nm/mrad	Tilting rigidity
0,564 kg*cm2	Mass moment of inertia
2 µm	Axial runout
ZMA20/38	Recommended INA precision locknut for radial locking
AM20	Recommended INA precision locknut for axial locking
18 Nm	Tightening torque for the recommended INA precision locknut
8.258 N	Required locknut force axial

datasheet pdf download

Also searched as

The same part number can be written with or without separators, or in progressive prefix form. We index these common variants so your search reaches this page:

ZKLF20682RS2APXL
ZKLF2068 2RS 2AP XL
ZKLF20682RS 2AP XL
ZKLF20682RS2AP XL
ZKLF2068 2RS2APXL
ZKLF2068 2RS 2APXL
ZKLF2068
ZKLF20682RS
ZKLF20682RS2AP
INAZKLF20682RS2APXL
INA ZKLF2068 2RS 2AP XL
INAZKLF2068 2RS 2AP XL

Overview

Symbol

Value

Description

20 mm

Bore diameter

0 mm

Bore diameter upper tolerance

-0,005 mm

Bore diameter lower tolerance

68 mm

Outside diameter

0 mm

Outside diameter upper tolerance

-0,01 mm

Outside diameter lower tolerance

56 mm

Width

0 mm

Width upper tolerance

-0,5 mm

Width lower tolerance

C_a

46.000 N

Basic dynamic load rating, axial

C_0a

94.000 N

Basic static load rating, axial

C_ua

5.700 N

Fatigue load limit, axial

n_{G Grease}

6.600 1/min

Limiting speed for grease lubrication

n_ϑ

3.000 1/min

Thermally safe operating speed

M_R

0,45 Nm

Bearing frictional torque

≈m

1,14 kg

Weight

Symbol

Value

Description

d₁

34,5 mm

Rib diameter inner ring

r_min

0,3 mm

Minimum chamfer dimension

r_{1 min}

0,6 mm

Minimum chamfer dimension

53 mm

Pitch circle diameter fixing holes

d₂

6,8 mm

Fixing holes diameter

3 mm

Width of extraction slot

47 mm

Distance of extraction slot

Pitch quantity of fixing holes

45 °

Pitch separation angle of fixing holes

60 °

Contact angle

Item

Code

Description

Number of bearings

2AP

Axial angular contact ball bearings, matched pair

Sealing

2RS

Contact lip seals on both sides

Tolerance class

Standard

Symbol

Value

Description

D_{a max}

43 mm

Maximum diameter of housing

d_{a min}

25 mm

Minimum diameter shaft

t₁

0,1 mm

Position tolerance of bore in the housing

M6X70

Size of fixing screws

n_a

Number of holes in adjacent construction

t_a

45 °

Pitch separation angle of holes in adjacent construction

Connection thread for lubrication

Symbol

Value

Description

T_min

-30 °C

Operating temperature min.

T_max

120 °C

Operating temperature max.

Code

Description

1.150 N/µm

Rigidity axial

320 Nm/mrad

Tilting rigidity

0,564 kg*cm2

Mass moment of inertia

2 µm

Axial runout

ZMA20/38

Recommended INA precision locknut for radial locking

AM20

Recommended INA precision locknut for axial locking

18 Nm

Tightening torque for the recommended INA precision locknut

8.258 N

Required locknut force axial

Also searched as

The same part number can be written with or without separators, or in progressive prefix form. We index these common variants so your search reaches this page:

ZKLF20682RS2APXL

ZKLF2068 2RS 2AP XL

ZKLF20682RS 2AP XL

ZKLF20682RS2AP XL

ZKLF2068 2RS2APXL

ZKLF2068 2RS 2APXL

ZKLF2068

ZKLF20682RS

ZKLF20682RS2AP

INAZKLF20682RS2APXL

INA ZKLF2068 2RS 2AP XL

INAZKLF2068 2RS 2AP XL

INA ZKLF2068-2RS-2AP-XL Axial Angular Contact Ball Bearing 20 × 68 × 56 mm

Overview

Key features

Typical applications

Selection guidance

Also searched as

INA ZKLF2068-2RS-2AP-XL Axial Angular Contact Ball Bearing 20 × 68 × 56 mm

Overview

Key features

Typical applications

Selection guidance

Also searched as

Other customers also viewed

Other customers also viewed