PROEXPORT / INDUSTRIAL ROLLERS
Elastomer Rings & Spacers | PROEXPORT
PROEXPORT precision elastomer rings, stripper rings, and spacer rings are engineered for sheet metal slitting lines, web cutting, pipe processing, and automated assembly machinery. Manufactured from high-tensile polyurethane, specialty rubber, and silicone, they deliver exceptional cut-tear resistance, dimensional accuracy, and dependable axial clamping.
TECHNICAL SPECIFICATIONS
Manufacturing Parameters and Operating Tolerances
We match core construction, elastomer compound or metallic coating, and surface finish directly to the operating conditions on your line.
| Technical Parameter | Specification / PROEXPORT Standard |
|---|---|
| Available Materials | Cast Polyurethane (60 to 95 Shore A), NBR, EPDM, FKM, Silicone |
| Dimensional Range | Inner diameter Ø20 mm to Ø700 mm, outer diameter up to Ø850 mm |
| Axial Thickness Tolerance | Precision ground thickness tolerance within ±0.02 mm; parallelism < 0.02 mm |
| Color Coding | Standardized color coding corresponding to Shore hardness for quick visual line setup |
| Tear Propagation | High-tensile polyurethane with tear strength up to 80 N/mm |
| Applications | Rotary shear knives, spacer rings, pipe guiding, carton folding, wiper seals |
LINE PROBLEM SOLVING (PWE)
Precision that Eliminates Line Downtime and Web Defects
At PROEXPORT, we do not simply supply coatings — we solve specific engineering challenges for plant technologists and maintenance leaders.
PRODUCTION CHALLENGE
Line Issue
Premature edge chipping and axial shifting of stripper rings during continuous high-speed rotary slitting of metal sheets.
PROEXPORT SOLUTION
Engineering Solution
Precision-cast and face-ground polyurethane rings with ultra-high tear propagation resistance and parallel ground faces.
PLANT ROI RESULT
Measurable Effect
Burr-free slit strip edges, stable web guidance, and elimination of marking on sensitive coated metal surfaces.
SELECTION & QUALITY CONTROL
Pre-Production Specification & Quality Inspection
Every project — new fabrication or reconditioning — is executed according to strictly defined inspection points:
- Micrometer measurement of inner diameter, outer diameter, and axial thickness.
- Face parallelism and squareness verification using surface plate comparators.
- Shore hardness certification per production batch.
- Tensile and tear propagation sample testing.
Technical Acceptance Standards
| Inspection Dimension | Technical Significance |
|---|---|
| Geometry & Tolerances | Diameter calibration, radial/axial runout, and concentricity of bearing journals. |
| Coating Structure | Durometer Shore/HV verification, nominal thickness, and zero-porosity bonding. |
| Dynamic Balancing | Residual unbalance compensation in ISO 1940 Grade G 2.5 or G 6.3. |
FREQUENTLY ASKED QUESTIONS (FAQ)
Frequently Asked Questions (FAQ)
What dimensional tolerances can be achieved on elastomer rings?
Through precision face grinding, we achieve axial thickness tolerances within ±0.02 mm and face parallelism within 0.02 mm, essential for rotary slitting lines.
Are color-coded rings available to indicate different hardnesses?
Yes. We offer standard and custom color coding (e.g. red, yellow, green, black) to help line technicians instantly identify different hardness ratings.
PROEXPORT / INDUSTRIAL ROLLERS
From technical drawing to line-ready solution.
Submit dimensions, photos, and operating conditions. We will determine the optimal manufacturing or reconditioning scope.