Sprockets · Steel or Plastic

Conveyor Sprockets Matched to Your Belt: Pitch, Teeth and Bore Confirmed First

A conveyor sprocket is the toothed wheel that drives a metal belt or its chain. It is part of the drive rather than a stand-alone part, so its pitch, tooth profile and bore are matched to your belt and shaft before it is supplied.

Replacing worn sprockets, ordering spares or fitting a new conveyor? A sprocket is part of the drive, not a stand-alone part. It is matched to the pitch and tooth profile of the belt or chain it drives, with teeth, bore and keyway confirmed on a drawing — and run with the belt when both are supplied.

Stainless steel conveyor sprocket with keyed bore
Metal
SUS304 / SUS316 / mild steel
Plastic
UHMWPE / nylon / POM
Bore
Round with keyway, or square
Build
Single or multi-row, solid or split
01
Two material types

Steel or Plastic: Which Sprocket Does Your Line Need?

Both are matched to your belt's pitch and tooth profile. Steel suits heavy and hot lines; UHMWPE, nylon or POM suit lighter, quieter or low-temperature lines. The material is chosen with the belt, product and temperature.

Steel sprockets

SUS304 / 316

or mild steel

Hobbed

full tooth profile

Polished

tooth faces

Conveyor sprocket: sus304, keyed bore
SUS304, keyed bore
Conveyor sprocket: chain sprocket
Chain sprocket
Conveyor sprocket: mild steel, blackened
Mild steel, blackened

Plastic sprockets

UHMWPE

nylon or POM

Square

or round bore

Split

option

Conveyor sprocket: square-bore plastic
Square-bore plastic
Conveyor sprocket: split uhmwpe
Split UHMWPE
Conveyor sprocket: uhmwpe, keyed
UHMWPE, keyed
02
Specifications, examples & accessories

Sprocket Specifications: Pitch, Teeth, Bore, Keyway and Rows

Every sprocket is made to a drawing. Start with the belt or chain it drives and its pitch — then teeth, bore, keyway, thickness and rows are confirmed. Accessories — guides, rollers, flights and side plates — are matched at the same time.

Pitch

Matched

to belt or chain

Bore

Round / square

keyway, set screws

Rows

Single / multi

solid or split

Material

Steel / plastic

by temperature

What is confirmed on the drawing

Conveyor sprocket
Multi-row stainless steel sprocket with keyed bore
Drawing labelReference (mm / in)
MetalSUS304 / SUS316 / mild steel
PlasticUHMWPE / nylon / POM
Pitch & tooth profileMatched to the belt or chain it drives
TeethNumber of teeth per drawing
DiametersOutside, pitch circle and hub diameter
BoreRound or square; size and fit per drawing
FixingKeyway and set screws per drawing
ThicknessHub and overall thickness
RowsSingle or multi-row
SplitSolid or split, with bolt and locating screw holes

Use the drawing to tell us which dimensions you can measure. Final values follow the confirmed project drawing.

Examples from past orders (mm)

DrivesMaterialMatched toTeethKey dimensions
Chain-driven beltSUS304Chain pitch 31.75 mm11Pitch Ø 112.7 · thickness 45 · bore 30 · 2 × M8 set screws
Spiral freezer beltSUS304U-link pitch 38.1 mm, rod Ø 616OD 219.48 · thickness 50.8 · bore 50 · keyway 9.525 × 4.76
Spiral freezer beltPOMU-link pitch 27.4 mm, rod Ø 514OD 142.44 · thickness 24 · bore 35 · keyway 10 × 3.3
Z-type ladder beltUHMWPEBelt pitch 12.7 mm, wire Ø 1.825OD ≈ 108 · thickness 50 · square bore 38.3 × 38.3
Eye link beltSUS304Chain pitch 25.4 mm13OD ≈ 117 · thickness 50 · bore 40 · 1 × M10 set screw
Balanced weave beltNylonMatched to customer sample5 rows × 29OD ≈ 127.7 · thickness 25.5 · bore 30 · keyway 8 × 4.43

Taken from individual orders as a reference, not complete drawings. They are not interchangeable combinations — your sprocket is drawn for your belt and shaft.

Sprockets by belt type

Stainless, keyed bore
Stainless, keyed bore
Stainless, hub
Stainless, hub
Plastic, square bore
Plastic, square bore
Belt on its sprocket
Belt on its sprocket

Matched to the U-link pitch and rod diameter, checked with the drum and turn ratio. Spiral Freezer Belt →

Drive and belt accessories

Plastic side guide
Plastic side guide
Tube
Tube
Stainless side roller
Stainless side roller
Square bar
Square bar
L-type flights
L-type flights
Spiral wire flights
Spiral wire flights
Side plate
Side plate
Tube measured
Tube measured

Accessories are made to the belt drawing — height, spacing and fixing confirmed with the belt and sprockets.

Measured a few dimensions? Send them for a sprocket review.

03
Fit check · pitch first

Will the New Sprocket Seat Your Belt — and Fit Your Shaft?

Looking the same is not enough. The pitch and tooth profile of the belt or chain decide whether it seats; bore, keyway and thickness decide whether it fits the shaft. They are checked first, before you get a quotation.

Replacement & spares

Replacing worn sprockets — with or without a new belt

You send
The belt or chain the sprocket drives, photos of the old sprocket with a caliper on bore, thickness and teeth, or a drawing.
We check first
Belt or chain pitch and tooth profile, number of teeth, bore and keyway — and whether worn teeth have changed the shape.
With a new belt
Belt and sprockets matched together and, where the belt is supplied too, run together before shipment.
You get
Before quoting: a sprocket drawing with pitch, teeth, bore and keyway for you to confirm.
New equipment

Sprockets for a new conveyor

You send
Belt type and pitch, shaft size and shape, conveyor width and number of sprockets per shaft.
We check first
Material for the product and temperature, rows across the width, bore and fixing.
Your drive
Sprocket spacing, wear strips and guides reviewed with the belt.
You get
A confirmed drawing and a check of bore, teeth and finish before shipment.
04
Project QC gates

How Is a Sprocket Verified Before Shipment?

Four checks that matter to you: bore and keyway, polished steel teeth, clean plastic sprockets, and a run with the belt. You see photos and video before it ships.

  1. Sprocket check: sprocket bore measured with a caliper
    01

    Bore and keyway measured

    Bore, keyway and thickness measured with a caliper against the drawing.

  2. Sprocket check: SUS304 sprocket with polished teeth
    02

    Steel teeth polished

    SUS304 teeth hobbed to a full profile and polished, so they leave no black marks on the belt.

  3. Sprocket check: UHMWPE sprocket checked clean with no burrs
    03

    Plastic sprockets clean

    UHMWPE sprockets checked free of scratches and black marks, with no excess burrs on teeth or holes.

  4. Sprocket check: sprocket running test with its belt
    04

    Run with the belt

    When the belt is supplied too, the sprocket is run with it to check every tooth engages.

Also checked: tooth count and profile against the drawing · set screw and locating holes · each sprocket wrapped on its own.

Side-driven belt on UHMWPE sprockets
Eye link belt on steel sprockets
Balanced weave belt seating on the teeth
05
Engineering experience

Problems You May See With Sprockets — and How They Are Prevented

A pitch that does not match, marks on the belt, a bore that does not fit or a sprocket damaged in transit means a stopped line. Each one has a check before your sprockets ship.

Problem

Sprocket pitch does not match the belt

The belt rides over the teeth instead of seating in them — it slips or climbs the sprocket.

✓ Belt or chain pitch confirmed at quotation; sprocket run with the belt when both are supplied.

Seeing this on your line? Send a photo →
Problem

Scratched or dirty plastic sprockets

Scratches, black dirt or heavy burrs on UHMWPE sprockets mark the belt and look wrong on a food line.

✓ Every plastic sprocket checked clean, with burrs removed from teeth and holes.

Seeing this on your line? Send a photo →
Problem

Quoted from a photo only

A sprocket can look right and still have the wrong pitch or tooth profile for your belt.

✓ No quote until the pitch of the belt or chain it drives is known.

Seeing this on your line? Send a photo →
Problem

Bore or keyway does not fit the shaft

A bore or keyway that is too tight, too loose or the wrong shape stops installation.

✓ Bore, fit, keyway and set screws confirmed on the drawing and measured before shipment.

Seeing this on your line? Send a photo →
06
Shipment records

What Arrives at Your Plant

Your sprockets arrive wrapped one by one, packed with the belt or on their own, with a packing list. Real shipments; order details hidden.

Sprocket shipment: sprockets packed

Sprockets packed

Each one wrapped so they do not knock.

Sprocket shipment: with the belt

With the belt

Sprockets and belt in the same crate.

Sprocket shipment: belt and sprockets together

Belt and sprockets together

Matched set, packed together.

Sprocket shipment: accessories listed

Accessories listed

Wear strips and rods on the packing list.

Need a sprocket for a different belt, bore or material?

Custom sprockets are welcome — drawn for your belt and shaft, with feasibility confirmed for your project. Send photos with measurements or a drawing.

Contact an Engineer →
07
FAQ

Questions Buyers Ask Before Ordering Sprockets

Q1Is sprocket replacement for a mesh belt always needed?

Not always. Send photos of the teeth, bore and wear, and we check whether it is a worn vs incompatible sprocket. A spiral belt sprocket is reviewed with the belt and any cage bar wear before a replacement is confirmed.

Q2Do you supply sprockets on their own?

Yes — for a new belt, as worn-sprocket replacements or as spares. A sprocket is treated as part of the drive: it is matched to the belt or chain pitch and tooth profile, not supplied from a photo alone.

Q3Steel or plastic sprockets?

SUS304, SUS316 or mild steel for heavy and hot lines; UHMWPE, nylon or POM where low weight, quiet running or low-temperature service matters. The material is chosen with the belt, product and temperature.

Q4Nylon sprocket hot washing: what should I tell you?

Tell us the cleaning frequency, water temperature, cleaners and operating temperature. Hot washing, strong chemicals and frozen residue all affect which plastic is chosen.

Q5What do you need to quote a sprocket?

The belt or chain it drives and its pitch, the tooth profile and number of teeth, material, bore and fit, keyway and set screws, hub and overall thickness, number of rows and whether it is split — plus photos with measurements, or a drawing.

Q6Is an old sprocket sample required?

No. A complete, accurate drawing is enough to work from. An old sprocket or photos with a caliper help, especially for worn teeth.

Q7Can you match a sprocket from a photo?

Not from appearance alone. Without the pitch of the belt or chain it drives, a sprocket is not quoted.

Q8Round bore or square bore?

Both. Round bores with a keyway and set screws, or square bores for square shafts — size and fit confirmed on the drawing.

Q9Split sprockets?

Split sprockets can be made so they fit onto a shaft without removing it; the split, bolt holes and locating screw holes are set on the drawing.

Q10How are sprockets checked?

Bore and key dimensions are measured, steel teeth are polished smooth, plastic sprockets are checked free of scratches, black marks and excess burrs, and the sprocket is run with its belt when the belt is supplied too.

Q11How are they packed?

Each sprocket is wrapped on its own in stretch film and bubble wrap, so it does not move, knock or rub in transit.

Q12How are commercial terms confirmed?

They depend on the sprocket and the project, and are confirmed in writing in the quotation.