Urethane Washers UW Series for Soundproofing
Urethane washers UW Series are engineered to support soundproofing when the mold is opened, helping reduce noise at machine start and cycle changes. The urethane construction allows stable compliance for consistent assembly.
- Designed specifically for soundproofing during mold opening cycles
- Selectable outer diameter, inner diameter, and thickness simplify part matching
- Urethane material provides compliant damping for smoother operation
- Used in mold housings and assemblies requiring noise reduction
Specifications
16 configurations available
| D (Outer Diameter) (mm) | d (Inner diameter) (mm) | T (Thickness) (mm) | type |
|---|---|---|---|
| 16 | 10 | 1.5 | - |
| 16 | 10 | 3 | - |
| 18 | 13 | 1.5 | - |
| 18 | 13 | 3 | - |
| 24 | 16 | 1.5 | - |
| 24 | 16 | 3 | - |
| 27 | 20 | 1.5 | - |
| 27 | 20 | 3 | - |
| 16 | 10 | 1.5 | - |
| 16 | 10 | 3 | - |
| 18 | 13 | 1.5 | - |
| 18 | 13 | 3 | - |
| 24 | 16 | 1.5 | - |
| 24 | 16 | 3 | - |
| 27 | 20 | 1.5 | - |
| 27 | 20 | 3 | - |
Product Guide
Application Scenarios+
These urethane washers are used in mold-opening controller assemblies where additional damping is needed during stop/start and transition moments. When the mold opens, small positional changes can create audible noise; a compliant washer layer helps absorb vibration and reduce sound transmission into the surrounding mold base.
Common scenarios include:
- Automotive connector and bracket molds: fitted in housings or clamp-related subassemblies to smooth cycle-start noise without interfering with basic open/close stroke.
- Appliance and consumer product molds: used around sound-sensitive machine interfaces where consistent compliance helps maintain assembly stability over repeated cycles.
- General-purpose mold housings: selected for assemblies requiring reliable fit through selectable inner/outer diameters and thickness.
The UW Series variant is suited because it offers multiple OD (16, 18, 24, 27 mm), ID (10, 13, 16, 20 mm), and thickness (1.5, 3 mm) options to match the controller stack-up and maintain controlled damping geometry.
Material & Process Details+
Urethane washers in the UW Series are made from a urethane elastomer, selected for its ability to provide stable compliance and damping under repeated mechanical cycling. Compared with rigid metallic spacers, urethane primarily trades higher elastic deformation (and effective vibration attenuation) for lower stiffness.
Relevant performance considerations for tooling applications:
- Heat/temperature behavior: urethane damping is temperature-dependent; proper selection helps maintain compliance across typical press operating ranges.
- Wear resistance vs. toughness: elastomers generally provide good resilience, but surface wear can increase with misalignment or excessive shear.
- Manufacturing process: washers are produced as elastomer components sized to OD/ID/thickness requirements, avoiding machining heat-treatment steps typical for steels.
No steel grade, HRC hardness, or quench-and-temper/nitriding state is specified for this urethane variant; fit and stack-up control are the main design drivers.
Sizing & Selection Guide+
Select the UW Series washer by matching the shaft or post geometry and the available stack height in the mold-opening controller assembly.
- Outer Diameter (D): choose from 16, 18, 24, 27 mm to cover the intended bearing region and fit within the surrounding pocket or recess.
- Inner Diameter (d): choose from 10, 13, 16, 20 mm to clear the mating post/fastener while maintaining concentricity.
- Thickness (T): use 1.5 or 3 mm to achieve the desired damping gap and to avoid interference with adjacent components at full stroke.
Practical fit guidance: ensure the ID-to-post clearance accounts for normal assembly tolerances and any thermal growth. Verify that the washer OD does not contact moving hardware during opening; if space is tight, prioritize the smallest D that still supports the damping area. Dimensions are configurable within the listed ranges; the chosen combination is fixed once selected.
Frequently Asked Questions
Which UW Series urethane washer dimensions should I use for a given mold-opening controller stack-up?+
Start by matching the inner diameter d to your post/fastener, using one of the listed options: 10, 13, 16, or 20 mm. Then select the outer diameter D from 16, 18, 24, or 27 mm so the washer covers the intended support area without hitting surrounding parts. Finally, choose thickness T as 1.5 or 3 mm to set the damping gap and avoid interference at mold open.
How does urethane compliance help reduce noise during mold opening without affecting motion?+
During mold opening, small vibration and transition forces can generate audible noise. The urethane washer provides controlled compliance and damping, reducing vibration transmission at the interface while remaining stable enough for repeated cycling. Because the UW Series is offered in selectable D/d/T, you can tune the contact area and stack height to maintain motion clearance.
What sizing risk exists if the washer inner diameter is too small or too large?+
If d (10/13/16/20 mm) is too small, assembly may be difficult and shear stresses can increase, accelerating wear. If d is too large, concentric support may be lost, which can change damping behavior and cause uneven contact. Always verify concentricity and clearance based on your controller geometry and tolerances.
Is there a specified hardness or heat treatment for this UW Series urethane washer?+
No steel grade, HRC hardness, or heat-treatment state (e.g., quenched & tempered, nitrided) is provided for the UW Series urethane washer. The component is elastomer-based, and its performance is driven by urethane damping and compliance rather than metal hardness specifications. For noise reduction, focus on correct D/d/T selection and correct stack-up clearance.
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