Configuration
Full designation, seals or shields, accuracy, clearance, cage, material and any matched arrangement.
BEARING SPECIFICATION / 51111
51111 Thrust Ball Bearing
55 × 78 × 16 mm · Axial support along the shaft. Compare the sourced reference data and specify your SANJ requirement.
Thrust Ball Bearings
51111 at a glance
51111 identifies a thrust ball bearing reference with 55 mm bore, 78 mm outside diameter and 16 mm overall width or height.
- Bore / d
- 55 mm
- Outside / D
- 78 mm
- Width / T
- 16 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: 51111
Ratings below belong to the identified JTEKT / Koyo source record. SANJ material, internal design, performance and supply scope require a confirmed quotation and datasheet.
Ratings below belong to the identified JTEKT / Koyo source record. SANJ material, internal design, performance and supply scope require a confirmed quotation and datasheet.
REFERENCE SPECIFICATION
All the details.
One clear source.
Full factual values from the source designation 51111. 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
| Parameter | Reference value |
|---|---|
| d | 55 mm |
| D | 78 mm |
| T | 16 mm |
| r(min.) | 0.6 mm |
| Basic load ratings Ca | 43.5 kN |
| Basic load ratings C0a | 93.1 kN |
| Fatigue load limit : Cu | 4.2 kN |
| Limiting speeds(Grease lub.) | 2800 min-1 |
| Limiting speeds(Oil lub.) | 4300 min-1 |
| d1(max.) | 78 mm |
| D1(min.) | 57 mm |
| D2 | - mm |
| D3 | - mm |
| A | - mm |
| R | - mm |
| C | - mm |
| da(min.) | 69 mm |
| Da(max.) | 64 mm |
| ra(max.) | 0.6 mm |
| Mass(Refer.) | 0.24 kg |
SELECTION CONTEXT
Match the bearing
to its duty.
51111 belongs to the thrust ball bearings family. Its reference envelope is 55 mm bore, 78 mm outside diameter and 16 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 55 × 78 × 16 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.
Operating duty
Radial and axial loads, speed, temperature, lubrication, fits, environment and expected service.
Supply requirement
Quantity, destination, packing, inspection records, drawing approval and delivery requirement.
CONTINUE COMPARING
