SN: 6-4
Name: PVC/EPDM Rubber roller (for water retaining)
Features: Resistant to weak acid and alkali, excellent water runoff performance
Hardness: 60-70
Color: Black
Heat resistances: 55℃
Radial runout: 0.15 mm
Size: Can be customized
The PVC EPDM water retaining roller is designed for liquid control in PCB wet process equipment. Installed at rinse, cleaning, transfer, or tank transition positions, it helps direct water and process liquid back toward the correct working area instead of allowing excess liquid to move into adjacent machine sections.
The roller is specified for weak acid and alkali environments and provides excellent water runoff performance. It has a 60-70 hardness range, black color, listed heat resistance of 55 C, radial runout of 0.15 mm, and customizable dimensions. It is intended for lower-temperature positions where effective liquid control and compliant contact are required.
| Item | Specification |
| Product Number | 6-4 |
| Product Name | PVC EPDM rubber roller for water retaining |
| Material | PVC EPDM |
| Resistencia química | Weak acid and alkali resistance |
| Dureza | 60-70 |
| Color | Black |
| Listed Heat Resistance | 55 C |
| Radial Runout | 0.15 mm |
| Size | Customizable |
– Weak acid and alkali resistance supports use in rinse sections and other PCB wet-process areas with mild chemical exposure.
– Excellent water runoff performance helps limit liquid carryover between adjacent processing or conveying sections.
– A hardness range of 60-70 provides a compliant contact surface for water retaining and sealing positions.
– The listed heat resistance of 55 C suits lower-temperature process areas when the actual operating temperature remains within the confirmed limit.
– A radial runout value of 0.15 mm provides a reference for stable rotation and consistent surface contact.
– Custom dimensions allow the roller to match different equipment models, shaft structures, and installation spaces.
– The black surface provides a consistent industrial appearance for replacement and original equipment applications.
A PCB panel can carry a film of water or process liquid as it leaves a cleaning, developing, etching, or rinsing section. If the liquid is not controlled, it may reach nearby rails, bearings, conveyor components, or the next process area. A water retaining roller creates a controlled contact point that helps interrupt this liquid movement and direct runoff back toward the tank or drainage area.
The PVC EPDM roller is particularly suitable where compliant contact and runoff performance are required. Correct contact pressure is important. Insufficient contact may allow liquid to pass, while excessive pressure may increase roller wear, board resistance, or shaft load. The roller diameter, hardness, alignment, and mounting position should therefore be matched to the machine design.
– PCB rinsing and cleaning equipment
– Water retaining positions between wet-process sections
– Lower-temperature rinse zones
– Mild acid or alkali process environments
– Liquid runoff and splash-control positions
– PCB washer and drying preparation sections
– Replacement parts for existing horizontal wet-process lines
– Custom equipment produced by PCB machinery manufacturers
The product is specified as a PVC EPDM rubber roller. Its listed performance is suitable for weak acid and alkali exposure, but chemical compatibility depends on the actual liquid, concentration, temperature, and contact time. The roller should not be selected for strong chemicals or higher-temperature areas without separate technical confirmation.
The listed heat resistance is 55 C. Actual process temperature should be measured at the roller position rather than estimated from room temperature or tank settings. Heat from nearby dryers, pumps, motors, or process liquid can raise the local operating temperature. If the measured temperature exceeds the listed value, another material or construction may be required.
Hardness affects sealing contact and runoff behavior. The listed range of 60-70 provides a softer contact than many rigid plastic rollers. Final suitability still depends on panel thickness, roller pressure, line speed, surface condition, and the geometry of the installation.
Roller size can be customized according to the customer’s drawing, dimension sheet, or existing sample. The outer diameter, working-face length, total length, shaft diameter, shaft-end shape, mounting method, and surface configuration should be confirmed before production.
For a replacement roller, customers should provide clear photographs of the complete part and both shaft ends. A marked drawing is preferable because similar PCB machines may use different dimensions even when the rollers look alike. The supplier should confirm the final drawing and operating conditions before manufacturing begins.
Choose this PVC EPDM roller for lower-temperature water retaining positions with mild chemical exposure and a need for good runoff performance. Before ordering, confirm that the process chemistry matches the stated weak acid and alkali resistance and that the roller temperature will remain within the listed 55 C value.
If the equipment uses strong acids, strong alkalis, or higher temperatures, compare the operating conditions with other available roller materials. Selection should be based on measured process conditions rather than appearance alone. Accurate dimensional information and a clear description of the roller’s function reduce the risk of ordering a part that fits mechanically but performs poorly in service.
– Confirm the roller dimensions, shaft-end design, and installation position before removing the existing part.
– Clean the bearing seats, brackets, and surrounding area before installation.
– Protect the roller surface and shaft ends from impact, cuts, and sharp tools during handling.
– Install the roller without forcing the shaft or creating side load.
– Check alignment, free rotation, and contact pressure before normal production begins.
– Run the equipment at low speed first and observe liquid runoff, vibration, and board movement.
– Inspect the surface regularly for swelling, hardening, cracking, cuts, deposits, or uneven wear.
– Use a cleaning method that is compatible with the roller and the chemicals in the production line.
– Replace the roller when wear or deformation affects liquid control or rotational stability.
Customized rollers should be produced against an approved drawing or confirmed sample. The inspection should cover the principal dimensions, shaft structure, surface condition, color, hardness requirement, and radial runout. The listed radial runout for this product is 0.15 mm.
Qixingyuan supplies spare parts and customized replacement components for PCB wet-process equipment. Customers can submit drawings, samples, photographs, and process information so the roller can be checked against the actual installation and operating conditions before production.
The roller should be packed to prevent impact, compression, moisture, and surface contamination during transportation. The working surface and shaft ends require separate protection because scratches, dents, or deformation may affect sealing contact and installation accuracy. Packaging and delivery arrangements can be confirmed according to roller dimensions, order quantity, destination, and customer requirements.
– Product number or equipment model
– Roller outer diameter
– Working-face length and total length
– Shaft diameter and shaft-end dimensions
– Mounting method and installation position
– Drawing, photographs, or an existing sample
– Process liquid and approximate chemical concentration
– Actual operating temperature at the roller position
– Conveyor speed and panel thickness
– Required quantity and delivery destination
What is this PVC EPDM roller used for?
It is used for water retaining, liquid runoff, and splash control in PCB wet-process equipment. Typical positions include cleaning, rinsing, tank transitions, and washer sections.
What chemicals can the roller handle?
The product is specified as resistant to weak acids and alkalis. The actual liquid, concentration, temperature, and exposure time should be provided for compatibility confirmation.
What is the listed hardness?
The listed hardness range is 60-70.
What is the listed heat resistance?
The listed heat resistance is 55 C. The operating temperature should be measured at the roller position and confirmed before ordering.
Can the roller dimensions be customized?
Yes. The size can be customized. A drawing, complete dimensions, or an existing sample should be provided for production confirmation.
What is the radial runout?
The listed radial runout is 0.15 mm.
What information is needed for a replacement order?
Provide the roller dimensions, shaft details, equipment model, installation position, process liquid, temperature, speed, quantity, and a drawing or sample whenever possible.
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