Stainless Steel Ring Shim Spacer
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Product parameters
Parameter | Description |
Material | Stainless Steel (SUS304 / SUS301 / SUS316), Copper / Brass (optional) |
Manufacturing Process | Chemical Etching (Primary), Laser Cutting (Auxiliary for thick parts) |
Shape | Flat plate / Ring / Slotted / Multi-hole / Irregular custom shapes |
Size Range | Customizable (Typical: ≤ 600 × 600 mm) |
Thickness | 0.01 mm – 1.0 mm (Etching optimal: 0.02–0.5 mm) |
Hole Diameter | ≥ 0.05 mm (depending on thickness & design) |
Minimum Line Width | ≥ 0.03 mm |
Tolerance | ±0.005 mm ~ ±0.02 mm (high precision control) |
Etching Accuracy | ±10% of material thickness (industry standard) |
Edge Quality | Burr-free, smooth edge, no deformation |
Flatness | ≤ 0.03 mm (depending on thickness & size) |
Surface Finish | Natural / Passivation / Polishing / Electroplating (Nickel, Tin, etc.) |
Surface Roughness | Ra ≤ 0.8 μm (optional requirement) |
Hardness | Based on material (e.g. SUS301 available in different tempers) |
Layer Structure | Single layer / Multi-layer stacking (custom available) |
Customization (OEM/ODM) | Supported (based on drawings, samples, or technical requirements) |
Drawing Formats Accepted | CAD / DWG / DXF / STEP / PDF |
Quality Control | Full dimensional inspection, optical measurement, thickness verification |
Product Description
Product Description：
Stainless steel ring shim spacer is a circular precision shim used for spacing and positioning in rotating or cylindrical assemblies. Produced by etching or laser cutting, this ring shim provides uniform thickness, high accuracy, and excellent flatness. It is ideal for applications requiring consistent spacing and structural stability.
Key Features：
Bearing ring adjustment
Rotor spacing
Mechanical assemblies
Industrial equipment
Precision engineering
Optimizing Rotating Assemblies: Stainless Steel Ring Shim Spacers for Bearings
In the realm of mechanical engineering, few components are as critical to performance as the Stainless Steel Ring Shim Spacer. While often viewed as a simple spacing element, its role in rotating assemblies—such as electric motors, turbines, and precision gearboxes—is fundamental to the machine's longevity and stability.
When a rotor spins at thousands of revolutions per minute, even the slightest imbalance or misalignment can lead to catastrophic failure. In this article, we explore how precision-engineered ring shims contribute to smoother rotation, reduced vibration, and extended bearing life.
The Critical Role of the Bearing Spacer
In a typical motor assembly, bearings must be positioned with extreme accuracy to manage axial loads and maintain the correct air gap. A Bearing Spacer is used to fill the gap between the bearing and the housing or shaft shoulder.
If this spacing is incorrect, several issues can arise:
- Excessive Vibration: Uneven spacing creates imbalance, leading to noise and vibration.
- Premature Wear: Improper preload can cause bearings to overheat or wear out rapidly.
- Rotor Rub: In extreme cases, the rotor may shift and rub against the stator, destroying the motor.
The Hidden Enemy: Eccentricity and Runout
The most critical specification for a Ring Shim used in rotating applications is concentricity.
The Problem with Traditional Manufacturing
In standard stamping processes, the metal is sheared by a punch and die. This mechanical force can cause the inner diameter (ID) and outer diameter (OD) to shift slightly relative to each other. This is known as eccentricity.
When an eccentric shim is installed on a shaft:
- It creates a "wobble" (axial runout).
- It transmits this wobble to the bearing inner race.
- The bearing balls then vibrate within the raceway, generating noise (NVH) and heat.
Our Solution: Chemical Etching for Perfect Concentricity
At our factory, we utilize Chemical Etching to manufacture our high-precision ring shims. Unlike stamping, etching is a non-contact process. The metal is dissolved simultaneously from both sides using a chemical spray.
This ensures that the ID and OD are perfectly centered relative to each other. The result is a Spacer Shim with near-zero runout, essential for high-speed applications like spindle motors or medical centrifuges.
Material Selection: Why SUS301 Full Hard?
For static applications, standard stainless steel (SUS304) is often sufficient. However, for rotating Ring Shim Spacers, we strongly recommend SUS301 (Full Hard).
表格
Feature | SUS301 (Full Hard) | SUS304 (Standard) |
|---|---|---|
Hardness | High (HV 430-490) | Moderate (HV 200-250) |
Yield Strength | > 1000 MPa | > 200 MPa |
Best For | High-speed rotation, Bearings | General corrosion resistance |
Why Choose SUS301?
- Resistance to Deformation: In high-speed motors, the centrifugal forces and bearing preloads are significant. SUS301 ensures the shim maintains its shape and thickness under pressure.
- Thin Capabilities: Because it is stronger, we can use thinner gauges of SUS301 to achieve the same performance, saving space in compact designs.
Precision Beyond the Round
While the standard ring shim is a simple washer, modern assemblies often require more complex spacing solutions. Our etching capabilities allow us to produce:
- Tab Washers: Shims with locking tabs to prevent rotation.
- Multi-Layer Spacers: Laminated shims for adjustable thickness in prototype phases.
- Micro-Shims: Ring spacers with wall thicknesses as small as 0.5mm, which are impossible to stamp without distortion.
Conclusion
In high-performance machinery, a Stainless Steel Ring Shim Spacer is not just a filler; it is a precision component that dictates the balance of the entire system. By choosing chemically etched shims made from high-grade SUS301, you ensure that your rotating assemblies run smoother, quieter, and longer.
Enhance Your Motor Performance
Don't let a simple spacer compromise your assembly's balance. If you need high-concentricity Ring Shim Spacers for your bearings or rotors, we are ready to assist. Contact Luna on WhatsApp at 12132219094 to discuss your specifications and request a quote today.
Questions and Answers
Frequently Asked Questions (FAQ)
Q: What is the concentricity tolerance of your etched ring shims?
A: Our chemical etching process typically achieves a concentricity of ±0.01mm or better, significantly tighter than standard stamping tolerances.
Q: Can you produce ring shims for miniature bearings?
A: Yes. We specialize in micro-precision parts. We can produce ring shims for bearings as small as 3mm in diameter with very thin wall sections.
Q: Do you offer cleaning services for these parts?
A: Absolutely. We understand that bearing assemblies are sensitive to contamination. We can provide ultrasonic cleaning and vacuum packaging to ensure the parts are free of oil and particles.
Q: How do I specify a ring shim for a high-speed application?
A: When requesting a quote, please specify the RPM (rotations per minute) of your application. We can then recommend the appropriate material hardness (e.g., SUS301 vs. SUS304) to ensure stability.
Factory Description
We have a full set of etching production equipment and mature processing technology. We can manufacture products in any shape with mesh sizes as small as 0.1mm, according to your requirements.
Our Advantage
Factory Direct Shipping
Our products undergo 100% QC checks before shipment, and we ensure compliance with international standards. If you require specific certifications for your target market, just let us know, and we'll meet those requirements.
Experienced Design and Manufacturing Team
We work closely with customers from the design phase to help avoid potential product flaws, ensuring both the functionality and design meet expectations.
Excellent Supply Chain Management
We can quickly adjust production schedules to meet your urgent deadlines, whether it's for large bulk orders or smaller rush orders.
OEM & ODM Support
We offer the option to print your logo or other customizations.
Strict Quality Control
Our products undergo 100% QC checks before shipment, and we ensure compliance with international standards. If you require specific certifications for your target market, just let us know, and we'll meet those requirements.
Certificate
商标6类
9001
质量认证
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Shenzhen Nkeyto Precision Hardware Co., Ltd. is a factory specializing in precision hardware processing, committed to providing customers with high-quality products and services.We look forward to working with you.
Contact Us
E-mail: luna@nkeyto.com
Tel: +1 213-221-9094
Add: 13th Building, 202, Dawangshan Second Industrial Zone, Dawangshan Community, Shajing Street, Bao'an District, Shenzhen, Guangdong Province
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