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Zju China 693-6000 Bearings 3x8x4mm High Precision
Conveyor & Transmission Bearings

Zju China 693-6000 Bearings 3x8x4mm High Precision

Zju China Bearing 693 W693 694 695 696 697 698 699 6000 3*8*4mm

Diámetro Interno

3mm

Diámetro Exterior

8mmGrosorNK154mm

Precision miniature ball bearing with standard 3x8x4mm dimensions, suitable for small mechanical applications requiring smooth rotation and reliable performance in compact spaces.

  • 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

Belt ConveyorsBucket ElevatorsMining, Cement & AggregatesOverhead ConveyorsPorts & Bulk TerminalsPumps, 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 Zju China 693-6000 Bearings 3x8x4mm High Precision. Compare these against your existing unit before ordering; send your measurements if anything differs.

CategoryDeep Groove Ball Bearing
Product Details

Design, sealing and application notes

Información Básica.

N.º de modelo W693
Stock Abundante
Alineación Rodamiento no alineable

Separado

No separado


Número de filas
Simple


Dirección de carga
Rodamiento radial


Material
Acero para rodamientos


Ángulo de contacto
0


Tamaño
3*8*4mm


Embalaje de transporte
Embalaje individual/Embalaje industrial


Especificación
Open, Z, ZZ, RZ, 2RZ, RS, 2RS


Marca comercial
ZJU; CN; OEM


Origen
Ningbo


Código HS
848220000


Capacidad de producción
100000


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
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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.

Belt Conveyors 01 Belt Conveyors Belt conveyors use pillow block and flanged units on pulley and idler shafts, plus spherical roller bearings at the heavy-load positions. Units often run… See the application Bucket Elevators 02 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 Mining, Cement & Aggregates 03 Mining, Cement & Aggregates Mines, quarries, aggregate producers and cement plants run long conveyor systems, crushers, screens and elevators in some of the dustiest and most heavily loaded… See the application Overhead Conveyors 04 Overhead Conveyors Overhead and trolley conveyors run on many small bearings in trolley wheels, chain guides and turn wheels, with flanged units on drive and take-up… 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 Zju China 693-6000 Bearings 3x8x4mm High Precision

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.