Problem 01Quote
Tiers do not sit on each other
Causeside-guard height or tier clearance assumed, not confirmed.
YIYI Mesh Belt controlside-guard height and usable tier clearance confirmed on your equipment drawing before quoting.
Self-stacking belt specifications · YIYI Mesh Belt technical library
Self-Stacking Belt built to your drawing, sample or old belt
A self-stacking belt is a stainless steel spiral conveyor belt whose side guards carry the tier above, so the belt stacks on itself in self-stacking spiral freezers, coolers and proofers. It fits only when spiral and rod pitch, rod diameter, side-guard height, belt width and turn ratio match the equipment. YIYI Mesh Belt builds each belt to the drawing you approve, or re-measures your old belt.
Product page and inquiry on the official website: Self-Stacking Belt
- Width 420–1069 mm (16.5–42.1 in)
- Side guard 60–150 mm
- Turn ratio 1.6 / 1.7 reference
- SUS304 / SUS316
Also called self-stacker belt or self-stacking spiral belt · Reviewed by the YIYI Mesh Belt production team, updated 2026-10-10
New self-stacking spiralBuilt from your equipment or belt drawing
Replacing a worn beltRe-measured from the old belt or sample
Repeat orderBuilt to the previous approved drawing
Spare partsRods, guards and sprockets per project
Self-stacking belt specifications
Standard and heavy-duty configurations, in mm with inch references. Your belt is built to the combination on your approved drawing.
| Dimension | Standard · mm | Heavy duty · mm | inch |
|---|---|---|---|
| Spiral pitch | 6 / 9 / 13 | 6 / 9 / 13 | 0.236 / 0.354 / 0.512 |
| Rod pitch | 30 | 30 | 1.181 |
| Rod Ø | 5 | 6 / 7 | 0.197 · 0.236 / 0.276 |
| Side-guard thickness | 1.5 | 1.5 | 0.059 |
| Side-guard height | 60 / 80 / 90 / 100 / 120 | 80 / 100 / 150 | 2.36–4.72 · 3.15–5.91 |
| Reinforcement piece | – | 4 × 15 (reinforced) | 0.157 × 0.591 |
| Belt width | 420 / 580 / 640 / 660 / 760 | 660 / 760 / 1069 | 16.54–29.92 · 25.98–42.09 |
| Belt length | To your drawing | To your drawing | |
| Material · turn · surface | SUS304 / SUS316 · turn ratio 1.6 / 1.7 reference (standard) · pickling or electropolishing | ||
Not in the table? Send your drawing or old belt. We confirm what we can build, in mm or inch. New to belt selection? Start with the 12 belt types overview.
Self-Stacking Belt documents
Read the full specification before you send your drawing
From our Document Library: the dimensions and options to compare with your current belt, and how the belt is made and inspected.
Self-Stacking Belt Technical Specification11 pages · read online page by page or download the PDF
- Standard and heavy-duty options in mm and inch
- Rod and reinforcement constructions
- Side-guard height options
Self-Stacking Belt Production and Quality Control21 pages · read online page by page or download the PDF
- Approval and inspection sequence
- Material inspection equipment
- Spiral wire forming
Configurations and side-guard heights
Choose a configuration and a side-guard height, or send your drawing. Tap “Add to RFQ” and your choice goes into the enquiry form.
Side-guard height
Side-guard height is a component dimension; the usable tier clearance depends on your equipment arrangement.
Combine configuration, side-guard height, width and surface. Matched drive sprockets, spare rods and other parts are supplied per project.
Six self-stacking belt problems and how production control prevents them
Problems that occur on self-stacking belts in service, and the control YIYI Mesh Belt applies at each order stage.
Problem 02Quote
Replacement will not match the belt in service
Causespiral pitch, rod pitch or guard height not measured from the old belt.
YIYI Mesh Belt controlold-belt sample or measured pitch, rod and guard values confirmed before quoting.
Problem 03Order
Belt runs off on the turn
Causeturn ratio not matched to the drum geometry.
YIYI Mesh Belt controlturn ratio and drum geometry confirmed on the drawing; trial section turned on your drum diameter where the project requires it.
Problem 04Production
Side guard burnt through at the weld
Causetoo much heat on the 1.5 mm side guard.
YIYI Mesh Belt controlwelds inspected on every belt; a burnt-through guard is reworked or replaced before packing.
Problem 05Production
Stack leans or binds
Causestacking plate angle out of position.
YIYI Mesh Belt controlstacking plate angle measured with a protractor during production.
Problem 06Pre-shipment
Upper and lower tiers do not engage
Causeguard geometry or assembly error.
YIYI Mesh Belt controlupper and lower tiers stacked and checked for engagement before shipment.
Every custom belt goes through the same controls. Send your belt width, side-guard height and turn ratio for a fit check. Read what causes self-stacking belt failure.
Production and inspection
Six checkpoints between raw material and packing. Wire and round bar are drawn in our own workshop; every belt is inspected before it ships. Full detail: manufacturing and quality control.
01Material in
Wire and round bar drawn in-house. Diameter, composition and hardness checked per batch.
02Stacking plate angle
Side-guard angle measured so each tier stands square on the one below.
03Assembly
Spirals, rods and side guards assembled to the order; width and length measured.
04Stacking engagement
Upper and lower tiers stacked and checked for engagement.
05Turning check
A trial section is turned on your drum diameter where the turn ratio requires it.
06Final inspection
Dimensions, welds, side guards and cleanliness checked on every belt before packing.
- In stock
- regular raw-material stock for drawing
- In-house
- stainless wire and round-bar drawing
- 100%
- final inspection before packing
- Traceable
- material documentation available for your order
What you receive
- Drawing approvalYour drawing confirmed, with our production suggestions.
- Trial pieceA trial section for your approval when you send a sample.
- Production after approvalMass production starts only on what you approved.
- Progress updatesProgress updates are agreed for each order, covering material and tooling status.
- Before shipmentMeasured photos and the inspection report of your own belt.
A belt that does not meet the approved drawing does not go to packing: it is recorded, reworked or remade, and inspected again. 100% final inspection is not a zero-defect or lifetime guarantee. Lead time is confirmed per order.
See your own belt measured before it ships. Ask for a video call from the workshop.
Self-stacking belt questions
What is a self-stacking belt?
A self-stacking belt is a stainless steel spiral conveyor belt whose side guards carry the tier above, so the belt stacks on itself in a self-stacking spiral freezer, cooler or proofer. It fits only when spiral pitch, rod pitch, rod diameter, side-guard height, belt width and turn ratio match the equipment.
Which side-guard heights are available?
Standard self-stacking belts: 60, 80, 90, 100 and 120 mm (2.36–4.72 in). Heavy-duty: 80, 100 and 150 mm (3.15–5.91 in). Side-guard thickness is 1.5 mm. Side-guard height is a component dimension; the usable tier clearance depends on your equipment arrangement.
What is the difference between standard and heavy-duty self-stacking belts?
Standard belts use a 5 mm cross rod and come in 420, 580, 640, 660 and 760 mm widths. Heavy-duty belts use 6 or 7 mm rods and come in 660, 760 and 1069 mm widths; the reinforced heavy-duty version adds a 4 × 15 mm reinforcement piece with a 7 mm rod.
What turn ratio does a self-stacking belt use?
The standard configuration uses reference turn-ratio coefficients of 1.6 and 1.7. The final ratio follows the approved equipment geometry, so belt width, drum geometry, tier clearance and the drive interface are confirmed on your drawing.
How do I measure an old self-stacking belt for replacement?
Measure spiral pitch and rod pitch over 10 pitches and divide by 10, rod and spiral wire diameter with a caliper, side-guard height and thickness, overall belt width and the turn direction. Send photos of the side guard and the old belt sample when you can, because worn belts can differ from the original.
Which materials and surface finishes are available?
SUS304 or SUS316 stainless steel, with pickling or electropolishing. Electropolishing is generally limited to stack plates up to 90 mm high; for taller stack plates, please confirm the finish with us before ordering. The finish is specified for your material and application on the approved drawing.
Can you match a self-stacking belt from another manufacturer?
Yes, from your drawing, an old-belt sample or measured values. The replacement is built to the measured geometry and approved before production; stack compatibility is confirmed for your equipment, not promised universally.
Do you supply sprockets and spare rods?
Side guards are part of the belt. Sprockets, spare rods and other parts are supplied per project, matched to your belt and equipment.
Self-Stacking Belt projects
We keep project records on our official website: what the customer sent, how we built it, and how it was measured. See Self-Stacking Belt projects on the official website →
Plan your self-stacking belt project
Select
- 12 belt types overviewFive steps from conveyor system to approved drawing
- Spiral or self-stacking belt?How the two spiral systems differ
- SUS304 or SUS316?Which grade, and which parts it covers
- Rod-end gapWhy 1–2 mm below the side link top, and where it is checked
- Standard or heavy-duty?Rod size, width, guard height and reinforcement
- Quote from an old-belt sampleWhat to send for a replacement quotation
Production capability
- ManufacturingIn-house drawing, forming, welding and assembly
- Quality controlChecks from incoming material to packing
- Trial section inspectionReadings checked against the drawing before mass production
- Pickling or electropolishingWhat most orders use, and the 90 mm stack plate limit
- Why in-house wire drawing mattersMaterial control from the raw coil
Fit check
Send 3 numbers. Get a fit check and a quotation.
Belt width, side-guard height and turn ratio (or your equipment model) are enough to start. We reply with what we can build and a quotation. Add a drawing or a photo of the old belt if you have one.
Sunny YeGlobal Sales Director, YIYI Mesh Belt · video meetings and factory toursWhatsApp +86 134 5177 3742info@yiyimeshbelt.com
Belt width, drum diameter (or turn ratio) and turn direction are enough to start. A photo of your old belt works too.
Get my fit check and quotation →Opens a short form: email or WhatsApp, what you need, a photo if you have one.