Spring Pins for heavy loads are not available. Standard products are designed primarily for general use and light loads, with options available in spring and stainless steel.

It is suitable for use in either assembly direction. If you plan to use it under heavy loads, we highly recommend verifying the most suitable way and specifying the assembly direction to our customers.

We are available to address your inquiries, but kindly use the same channel you utilized for your purchase. Please review the available topics for standard products.

If you provide us with the size, we will send you the data. If required, we can also send sample products.

JIS standards also stipulate limitations, with both allowing for up to 1% of the nominal diameter for expansion or contraction. Beyond this range, there is a risk of potential permanent deformation and dislodging from the groove.

Yes, it is possible. Upon verifying the specified conditions, we can suggest a customized shape. Subsequently, we will create a prototype, and if the customer’s evaluation results are satisfactory, we will proceed with mass production.

Although we manufacture some custom products made of stainless steel, we do not have standard products made of stainless steel.

We do not provide CAD data.

Generally, it is S60C (M) to S70C (M) or SK85 (M) or SWRH62 (A/B) to SWRH72 (A.B) or equivalent.

Material we use is all made in Japan.

The country of production differs depending on the products, so please contact us for each product.

Our dish springs are subject to dimensional control, but not load control.

The standard wave washer is a dimensionally controlled product, whereas the standard wave washer for bearings is a load-controlled product, and it includes the relevant bearing number in its product name. The shape and manufacturing method are identical for both, so please select the appropriate one based on your specifications. Customized wave washers will be controlled based on specifications requested by customers.

When a wave washer is utilized even once, it will flatten, resulting in a reduced height. If there is variation in the set height during use, or if the working height differs between the initial setting and assembly, it’s important to take into account the load after the initial setting.

The calculation formula does not take plastic deformation into account, and the correlation of compression and load comes out as a straight line, which is a plastic deformation. The actual load characteristics will be a curved line affected by a plastic deformation.
For standard products, please refer to the load curve graph. If you need a load curve graph, please request us through the inquiry form.
We recommend making a prototype and verifying the calculated values for customized products.

Our products, both manufactured at our local factory and at our domestic and international group factories, undergo austempering heat treatment.

Most of our spring steel products are either phosphate-coated or zinc-plated with trivalent chromate, depending on the specific product. Other surface treatments, such as Nickel plating, Chrome plating, or other alloy plating are available as we outsource to our suppliers.