What are spring washers with cap and what are they used for?

Spring washers with cap serve as shaft retainers, effectively preventing axial withdrawal on shafts, bolts, and axles without groove.

What is the main difference between spring washers with and without cap?

Spring washers with cap offer additional protection against sharp edges and environmental influences, while simple spring washers do not provide this protection.

When should you use spring washers with cap instead of regular spring washers?

Spring washers with cap are preferably used in applications where additional protection for components or operators is required, such as in safety-critical or corrosive environments.

For which diameter sizes are spring washers with cap suitable?

They are suitable for shaft diameters from 1.6 to 25 mm, similar to standard spring washers.

Which materials are used for these spring washers with cap?

The spring washers can be made of steel or stainless steel, the caps are always made of stainless steel.

What surface treatments are available?

The surface of the spring washer is available in either bright, varnished, or mechanically galvanised white.

What factors influence the selection of the right spring washer with cap?

Consideration should be given to the material of the bolt or shaft, the diameter, the axial load, the operating temperature, and the need for additional protection through the cap.

What advantages do spring washers offer compared to other retainers?

Spring washers with cap are characterized by easy assembly without special preparations, such as grooves, on shafts or bolts, and offer a cost-effective solution for protecting components. Thanks to the production possibilities in stainless steel or the various surface coatings, they have high corrosion resistance and are therefore optimal for humid or corrosive environments. Additionally, they are available in various sizes and materials, offer low-maintenance properties, and their cap protects both the environment and people from sharp edges.

What special tools are required for the assembly of spring washers with cap?

Specialized assembly tools for spring washers with cap enable precise and time-saving installation.

What measures should be taken for quality assurance?

Regular visual inspections and tests for wear and damage ensure that spring washers and caps retain their functionality and remain intact.

How is the trigger force of a spring washer with cap determined?

The trigger force depends on the size and material of the washer and shaft, and varies between 200 to 3850 Newtons. The cap does not play a direct role here as it only serves a protective function.

mbo Osswald offers spring washers with cap, spring washer with cap an. These are used for axial shaft retainers for bolts and shafts without groove. Material of the spring washer is spring steel resp. stainless steel, die cap is always made of stainless steel.

Spring washer with cap 18 mbo 29 Steel varnished

for bolts and shafts without groove

Please first choose whether you are a private or corporate customer!

We have unfortunately had to adapt the price of this item due to cost increases in our supply chain. We would be happy to work with you to find a solution to minimise the impact of this increase. Please get in touch with your contact person to discuss this:

The quantity currently authorised for the shop has been exceeded. However, we would be delighted to receive a request from you!

Unfortunately, there is a minimum order volume of [[minsurface]] units due to the coating used. Alternatively, you can receive the products uncoated (bright, lightly oiled) or in stainless steel (1.4305, 1.4301 or 1.4404) even as a one-off part:

Undercut steel (1.0715/1.0718) Stainless steel (1.4305) Stainless steel A2 (1.4301) Stainless steel A4 (1.4404)

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1 The specifications regarding trigger forces apply only to steel versions, not to spring washers made of stainless steel, and are based on our own tests using a bright steel shaft made from materials 1.1151 or 1.0715, each in tolerance class h11.
We recommend customer-side tests, as roughness or work hardening of the steel shaft, among other factors, can lead to different values.

Article no.

10 29 0180 0382/900

Identifier

Spring washer with cap

Size

18 mbo 29

Material group

Steel

Surface

varnished

17,34-17,62

D ±0,3

38,2

H ±0,2

11,7

Trigger force approx. N¹

3500

T max.

8,7

U min.

Number of slots

Material

Spring washer: spring steel

Cap: generally stainless steel