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Original unbranded thrust ball bearing concept visualization

BEARING SPECIFICATION / 51113

51113 Thrust Ball Bearing

65 × 90 × 18 mm · Axial support along the shaft. Compare the sourced reference data and specify your SANJ requirement.

Original product concept visualization

Thrust Ball Bearings

51113 at a glance

51113 identifies a thrust ball bearing reference with 65 mm bore, 90 mm outside diameter and 18 mm overall width or height.

Bore / d
65 mm
Outside / D
90 mm
Width / T
18 mm

Thrust ball bearings support axial load rather than radial load. Confirm load direction, shaft and housing washers, alignment and minimum load requirements.

Reference configuration: 51113
Ratings below belong to the identified JTEKT / Koyo source record. SANJ material, internal design, performance and supply scope require a confirmed quotation and datasheet.
TECHNICAL SOURCEJTEKT / Koyo · 51113 ↗Source checked 2026-10-20Reference image source ↗

REFERENCE SPECIFICATION

All the details.
One clear source.

Full factual values from the source designation 51113. Mounting dimensions and reference mass relate to that design; they must be checked against the final SANJ drawing.

Load ratings: kN · dimensions: mm · speed: min⁻¹ · mass: kg

51113 — JTEKT / Koyo reference data
ParameterReference value
d65 mm
D90 mm
T18 mm
r(min.)1 mm
Basic load ratings Ca52.1 kN
Basic load ratings C0a117 kN
Fatigue load limit : Cu5.3 kN
Limiting speeds(Grease lub.)2400 min-1
Limiting speeds(Oil lub.)3700 min-1
d1(max.)90 mm
D1(min.)67 mm
D2- mm
D3- mm
A- mm
R- mm
C- mm
da(min.)80 mm
Da(max.)75 mm
ra(max.)1 mm
Mass(Refer.)0.34 kg

SELECTION CONTEXT

Match the bearing
to its duty.

51113 belongs to the thrust ball bearings family. Its reference envelope is 65 mm bore, 90 mm outside diameter and 18 mm overall width or height.

Thrust ball bearings support axial load rather than radial load. Confirm load direction, shaft and housing washers, alignment and minimum load requirements.

For a manufacturing enquiry, provide the complete designation and operating conditions. Matching the dimensional envelope alone does not confirm interchangeability or equivalent performance.

Is the same size a direct replacement?

No. Matching 65 × 90 × 18 mm establishes the boundary dimensions. The full designation, tolerances, clearance, contact angle or roller arrangement, seals, cage, lubrication and performance must also be checked.

Understand bearing load ratings →

PREPARE A USEFUL ENQUIRY

Specify what the model
number leaves open.

A complete brief reduces assumptions and gives the quotation a clear technical basis.

01

Configuration

Full designation, seals or shields, accuracy, clearance, cage, material and any matched arrangement.

02

Operating duty

Radial and axial loads, speed, temperature, lubrication, fits, environment and expected service.

03

Supply requirement

Quantity, destination, packing, inspection records, drawing approval and delivery requirement.

FROM MODEL TO REQUIREMENT

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