Stainless Flat Washers – Specifications
|
Parameter |
Specification |
|---|---|
|
Standard |
DIN 988 |
|
Inner Diameter (d1) |
3–170 mm |
|
Outer Diameter (d2) |
6–200 mm |
|
Thickness (h) |
0.1–3.5 mm, depending on type |
|
Material |
Spring Steel / Steel, according to product type |
|
Hardness |
440–500 HV (Supporting Rings) |
|
Surface Treatment |
Oiled, Phosphated, or Smooth Surface |
|
Dimensional Tolerance |
According to DIN 988 specifications |
|
Customization |
Sizes, thicknesses, and packaging |
DIN 988 shim rings are available in different thicknesses to help control axial clearance, adjust component positioning, and compensate for dimensional variations in mechanical assemblies. Selecting the appropriate thickness depends on the required clearance, mating component dimensions, and assembly tolerances.
- Axial Clearance Adjustment: Select a shim thickness that brings the assembled clearance within the specified design limits.
- Component Positioning: Use shim rings to fine-tune the axial position of shafts, bearings, bushings, and other mating components.
- Thickness Combinations: Multiple shims may be combined when the assembly design permits, but the total stack thickness and accumulated tolerances must be considered.
- Specification Matching: Confirm the required inner diameter, outer diameter, and nominal thickness against the engineering drawing before ordering.
Dimensional Tolerance & Assembly Fit
Dimensional accuracy affects how DIN 988 shim rings fit between mating components and how consistently they control assembly clearance. For B2B procurement, dimensions should be checked against the applicable DIN 988 specifications and the customer's engineering requirements.
|
Inspection Item |
Importance in Assembly |
|---|---|
|
Inner Diameter (ID) |
Ensures clearance around shafts or locating features |
|
Outer Diameter (OD) |
Determines fit within the available mounting space |
|
Thickness |
Controls axial spacing and clearance adjustment |
|
Flatness |
Supports even contact between mating surfaces |
|
Dimensional Tolerance |
Helps maintain consistent fit across production batches |
Custom DIN 988 Shim Ring Manufacturing
Non-Standard Dimensions
Customize inner diameter, outer diameter, and ring thickness to match specific assembly requirements.
Material & Hardness Options
Specify material grades and hardness requirements according to application conditions and technical drawings.
Precision Manufacturing
Maintain dimensional consistency through controlled production and inspection of critical dimensions.
OEM & Bulk Orders
Support drawing-based production, sample confirmation, customized packaging, and batch orders for industrial manufacturers and distributors.
FAQ
Can I order multiple DIN 988 shim ring sizes in one batch?
Yes. Multiple sizes and thicknesses can be discussed within one order. Buyers should provide a detailed size list and the required quantity for each specification to support quotation and production planning.
Are DIN 988 shim rings suitable for automated assembly lines?
They can be used in automated assembly processes when dimensions, thickness tolerances, surface condition, and feeding requirements match the equipment and assembly design. Sample testing is recommended before large-scale implementation.
How should DIN 988 shim rings be stored before assembly?
Store the rings in a clean, dry environment and keep different sizes separated and clearly labeled. Protective packaging helps reduce scratches, contamination, and corrosion during storage and transportation.
Can you manufacture DIN 988 shim rings based on customer drawings?
Yes. Anhui Pins can review customer drawings and technical specifications for customized production. Requirements outside the standard dimensions or material specifications should be confirmed before order placement.
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