Corrugated Board Conveying
Transport positions that require stable friction and continuous sheet movement.
BOARD CONVEYING PARTS
Custom Polyurethane Sun Wheels
Sun wheels and no-crush wheels for corrugated board conveying, guiding and gentle contact, made after confirming dimensions, hardness, surface profile and application.
Tell us the wheel size, hardness, application and required quantity. See the quote checklist.
Custom DimensionsDeveloped for the machine
Custom HardnessMatched to operating needs
Repeat SupplyDrawing or sample support
PRODUCT OVERVIEW
Elastic Contact and Stable Friction Where Board Handling Matters
Polyurethane sun wheels and no-crush wheels are used where corrugated board needs to move with controlled contact. JUNSHIDA develops replacement wheels around the original part, machine details or a confirmed drawing.
- Application-matched elasticityPolyurethane characteristics can be reviewed around the conveying position and operating need.
- Dimension customizationOuter diameter, inner diameter, width and profile are confirmed before production.
- Multiple structuresOpenings, hubs, bearings or other mounting details can be reviewed from the existing wheel.
- Made for replacement workMachine model, drawing, sample and clear measurement photos can all support identification.
Product Parameters
Product NamePolyurethane Sun Wheel / No-Crush Wheel
MaterialCast polyurethane (PU)
Application PositionCorrugated board conveying, feeding and guiding positions
DimensionsCustom outer diameter, inner diameter and width
HardnessCustomized for feeding pressure and board conditions
Surface StructureSlots, teeth, grooves, flat contact surfaces and other profiles
MountingBore, bearing, hub or other custom installation structure
ColorOrange as standard; other colors available on request
Confirmation MethodMachine model, drawing, sample or current product photos
Custom OptionsDimensions, surface pattern, hardness, color and installation structure
Final dimensions, hardness and profile are confirmed before quotation and production.
PRODUCT APPLICATIONS
Elastic Conveying and Guiding for Corrugated Board
Polyurethane sun wheels are used where stable friction and suitable elasticity are needed. Compared with rigid components, the polyurethane contact can maintain conveying force while helping reduce pressure marks and crushing on corrugated board.
No-Crush Wheel Positions
Machine sections designed to guide or feed board with reduced compression.
Carton Converting Equipment
Forming, printing and die-cutting machinery for corrugated packaging.
Board Transfer and Guiding
Conveying and guide systems that need elastic, controlled contact.
Replacement of Worn Wheels
Custom replacements developed from old wheels, drawings, photos or samples.
Stable Friction Applications
Equipment positions that require dependable traction with resilient contact.
SEARCH & SELECTION GUIDE
Polyurethane No-Crush Wheel Names, Uses and Replacement Checks
Buyers use several names for this family of compliant conveying wheels. The name alone does not confirm interchangeability, so the wheel profile, dimensions, hardness and mounting structure should always be checked against the original machine position.
PU Sun Wheel or Sun Feed Wheel
Common sourcing terms for lobed polyurethane wheels used to convey, guide or hold corrugated board. Confirm the lobe count, outside diameter, width and bore rather than ordering by name alone.
No-Crush or Zero-Crush Wheel
Terms used for flexible-contact wheels intended to move sheet material while limiting concentrated pressure. Suppliers may also call them soft-touch wheels, no-crush rollers or urethane spacer wheels.
Corrugator No-Crush Roller
These wheels may appear at transfer, stacker, slitter-scorer or cut-off positions on corrugated board lines. Send the exact machine section because profiles and operating conditions vary.
Board Marks, Crushing or Indentation
If the current wheel leaves marks, document the board grade, flute, contact pressure and worn profile. Hardness and geometry must be reviewed together; a softer wheel is not automatically the correct answer.
Slipping, Skew or Uneven Feeding
Check surface wear, contamination, wheel diameter consistency, shaft alignment and contact pressure. Photos of the installed set help distinguish a replacement-wheel issue from a machine-setting issue.
Data for an Accurate Replacement
Provide outer diameter, bore, face width, lobe or groove pattern, hub or bearing structure, quantity, machine model and operating position. A drawing or physical sample is best for complex profiles.
Sun Wheel vs. Lead Edge Feed Wheel
A sun or no-crush wheel normally emphasizes compliant conveying and guiding. A lead edge feed wheel is built around the feeder connection, contact face and geometry that introduce sheets into a printer, slotter or die cutter. Similar color or diameter does not make the two parts interchangeable.
For terminology and measurements, read the sun wheels vs. no-crush wheels guide. If the current set slips or marks the board, use the slipping and board-crushing troubleshooting guide.
CUSTOM WORKFLOW
From Existing Wheel to a Confirmed Replacement
Clear measurement photos and a reference sample help reduce uncertainty during the quotation stage.
Identify
Share the machine position, model and current wheel photos.
Measure
Confirm diameter, bore, width and mounting details.
Review
Confirm hardness, quantity and operating requirements.
Produce
Proceed with molding, finishing, inspection and packing.
MEASUREMENT GUIDE
How to Measure a Replacement Sun Wheel
You can measure the current wheel or send a physical sample so we can confirm the correct configuration.
1. Outer Diameter
Measure the maximum outside diameter of the wheel.
2. Inner Diameter or Bore
Measure the center hole, bearing bore or hub connection dimensions.
3. Overall Width
Measure the complete width of the wheel.
4. Surface Pattern
Photograph the slots, teeth, grooves or contact-surface shape clearly.
5. Mounting Structure
Confirm whether the wheel uses a bearing, hub, bore or special installation structure.
6. Hardness or Application Position
If hardness is unknown, provide the machine position and board type for review.
7. Quantity and Photos
Send front, side and back photographs together with the required quantity.
QUOTE CHECKLIST
Send These Details for a Faster Review
- Machine brand and model
- Current wheel photos
- Outer diameter
- Inner diameter or bore
- Overall width
- Profile or slot details
- Required quantity
- Drawing or physical sample
FREQUENTLY ASKED QUESTIONS
Polyurethane Sun Wheel FAQ
Are polyurethane sun wheels standard parts or custom parts?
Most polyurethane sun wheels are customized according to the machine model, original component, drawing or physical sample.
Can you reproduce the same surface pattern as my current wheel?
Yes. Slots, grooves, teeth and contact-surface shapes can be confirmed from photographs, drawings or a physical sample.
Can the hardness be adjusted?
Yes. Hardness can be selected according to board-conveying pressure, friction requirements and the installation position.
What information is required for a quotation?
Provide the outer diameter, inner diameter, width, surface pattern, mounting structure, quantity and clear photographs of the current wheel.
Can you make wheels with a bearing or hub structure?
Yes. Bearing, hub, bore and other mounting structures can be confirmed from the actual sample or drawing.
Can the color be customized?
Yes. Orange is common, and other colors can be customized according to the customer's requirement.
Do I have to send a physical sample?
If the structure is simple and the dimensions are clear, photographs and measurements may be sufficient. A physical sample is recommended for complex patterns or special mounting structures.
RELATED PRODUCTS
Other Polyurethane Parts for Corrugated Machinery
Need to identify the correct wheel profile?
Compare terminology, dimensions, mounting structures and working symptoms before requesting a replacement.
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