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51103 Thrust Ball Bearing 30x55x17mm High Precision for Gearbox
Conveyor & Transmission Bearings

51103 Thrust Ball Bearing 30x55x17mm High Precision for Gearbox

Customized Single Direction 51103 Precision Thrust Ball Bearing for Speed Reducer Gearbox

Inside Diameter17 mm
Outside Diameter30 mm
Thickness6 mm
Dynamic Load Capacity14.2 kN
Static Load Capacity38.5 kN
Max Speed (Grease)3600 rpm

Precision thrust ball bearing designed for high-load, low-speed applications. Ideal for speed reducer and gearbox systems requiring reliable axial load support in one direction. Compact design with high rigidity and accuracy.

  • Seal & load matched to dutySelected for dust, moisture, washdown and 24/7 running.
  • Written quotationStock status, lead time and shipping terms stated.
  • Export documents suppliedShipped with tracking and the matching export paperwork.
  • Old units identifiedUnmarked units matched from photos and mounting dimensions.
Get a Quote Ask on WhatsApp

Applications

Bucket ElevatorsPorts & Bulk TerminalsPower Transmission & GearboxesPumps, Motors & Workshop Equipment
Before You Order

Check these three points first

Shaft size alone does not guarantee a fit. These three checks prevent units that arrive and do not match the existing frame.

  • Shaft diameter

    Measure the actual shaft, not the old part number. Note the locking type: set screw, eccentric collar or adapter sleeve.

  • Bolt spacing & mounting

    Pillow block, flanged or take-up frame. Give the bolt centre distance and centre height so the unit drops into the existing frame.

  • Operating environment

    Dust, water, washdown, load and running hours decide the seal design and bearing series.

Technical Data

Specifications

Model, category and dimensional data for 51103 Thrust Ball Bearing 30x55x17mm High Precision for Gearbox. Compare these against your existing unit before ordering; send your measurements if anything differs.

CategoryThrust Ball Bearing
Product Details

Design, sealing and application notes

Basic Info.

Model NO.
Single Direction Thrust Ball Bearing

Sample
Accept

Structure
Thrust

Width
15.5mm

Material
Gcr15/ Chrome Steel

Precision Rating
P0 P6 P5

Cage Material
Machined Brass

Cage
Steel Cage

Seal Type
Open/Seal

Feature
Single Direction

Vibration
Zv1, Zv2, Zv3, or as Requested

Applicable Industries
Building Material Shops, Machinery Repair Shops

OEM & ODM Custom
Accept

Logo Custom
Accept

Transport Package
Standard Packaging or Customized

Specification
Standard Specifications or Customized

Trademark
AUY

Origin
Suzhou, China

Production Capacity
500000pieces/Year

Why Full Bearing Range Company

Conveyor and transmission specialists, plus every other bearing your plant needs.

Full Bearing Range Company selects conveyor bearings by dust, load and continuous-duty conditions, then supplies the rest of the plant's bearings on the same order, so your maintenance team deals with one supplier.

Upgrade path for repeat failures

  • Heavier series or upgraded seal proposed
  • Based on your failure history and duty
  • No change made without your approval

Seals for dust, water and washdown

  • Seal choice matched to contamination level
  • Multi-lip options for dusty tail and take-up positions
  • Prevents early failures caused by the wrong seal

Whole-plant range, one shipment

  • Mounted units, inserts, taper and spherical roller bearings
  • Deep groove, angular contact, thrust and precision bearings
  • Housings, sleeves, locknuts, seals and lubricants
Same Category

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Maintenance crew replacing a bearing unit on a belt conveyor at an aggregate plant

Same position keeps failing? Send the failure history.

Tell us where the unit runs, how long it lasts and what the environment is. We review the seal and load rating and propose a heavier series or upgraded seal if the current spec is the cause.

Request an Upgrade Review Send Photos on WhatsApp
Applications

Where this bearing runs

Typical equipment and industries for this unit, from belt conveyors and bucket elevators to pulley shafts in mines, ports and cement plants.

Bucket Elevators 01 Bucket Elevators Bucket elevators carry head and boot shafts on pillow block or flanged units, and the head shaft takes the full chain or belt load… See the application Ports & Bulk Terminals 02 Ports & Bulk Terminals Port terminals and grain or bulk handling facilities run ship loaders, stackers, reclaimers and long belt conveyors around the clock. They also run pumps,… See the application Power Transmission & Gearboxes 03 Power Transmission & Gearboxes Mechanical power transmission systems, including reducers, gearboxes, couplings and gear drive sections, depend on tapered, cylindrical, angular contact and spherical roller bearings to carry… See the application Pumps, Motors & Workshop Equipment 04 Pumps, Motors & Workshop Equipment Beyond the conveyors, every plant runs pumps, electric motors, fans and workshop machines that need deep groove, angular contact and thrust bearings, plus linear… See the application
Field Results

What maintenance teams report

"We had a repeated failure on a take-up bearing position. Their engineer suggested a heavier unit with a triple-lip seal. We installed it three months ago and it is still running cool. They also supplied all the other bearings we needed for the shutdown."
RJ Robert JohnsonJohnson Grain Terminal, USA
"Identifying an old flanged bearing unit on an overhead conveyor was tricky. We sent photos and bolt spacing measurements, and they matched the exact unit within hours. They also supplied the matching deep groove bearings for the drive motor at the same time."
EW Emma WilsonWilson Logistics Warehouse, Australia
Selection Guides

Read before you specify

Practical notes on seal selection, load ratings and mounting for conveyor and transmission bearings.

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FAQ

Buying questions

What does your quotation include?

Every quotation is written and lists the model, quantity, price, currency, stock status, lead time and shipping terms. You get everything needed to approve the order or plan a shutdown in one document.

Can you recommend an upgrade if this bearing keeps failing?

Yes. If the current spec keeps causing failures, we propose an upgraded seal or a heavier series based on your operating conditions. Any change is made only after you approve it.

Can I order general plant bearings on the same order?

Yes. Full Bearing Range Company supplies deep groove, angular contact, thrust and precision bearings, linear motion parts, housings, sleeves, locknuts, seals and lubricants alongside conveyor units. Pumps, motors and workshop equipment can be covered in one shipment.

What happens if there is a problem after delivery?

Contact us with your order number and we handle it from there. We also follow up on receipt and installation after every shipment.

Request a Quote

Get a quote for 51103 Thrust Ball Bearing 30x55x17mm High Precision for Gearbox

Send the conveyor position, model, shaft size, bolt spacing or mounting type, operating environment and quantity. No model on the old unit? Attach photos and mounting dimensions on WhatsApp.

We reply with a written quotation by email or WhatsApp.