Frequently Asked Questions

Where are steel belts used?

Steel belts are used for precise power transmission, clean-room environment, food conveying, robots, heating, drying, vacuum environment, etc.

What is producible range of steel belts such as thickness and width?

Thickness ranges from 0.04 to 1.2mm and width from 2 to 1500mm. However, there are exceptions by combination of thickness, width and length.

How long is the durable life of steel belts?

We can't tell you generally. The life depends on the application and how belts are used. Ten million rotations or more as a guideline in the power transmission system.

What kinds of surface treatment are available on steel belts?

Fluoroplastics coating, black finishing, mirror finishing, matt finishing, emboss processing, etc.Special processing.

How is the steel belt welded?

It is done by butt welding on the cross section of both strip edges.You see no clear bump as it is in stack welding.

Which shape has a steel open belt?

It is not a ring. There are brackets (reinforcing plate) on each end of a steel belt strip. 

What is a ring-rolled seamless steel belt?

A belt is once welded. This welded belt goes thru the ring rolling machine. After the ring rolling it becomes half thick with high rigidity and splendid flatness. There is no surface irregularity in the entire belt including the welded section. That's why we call it as seamless.

How is DYMCO Ring-rolled seamless steel belt different from other belts?

There is no difference in rigidity between the welded section and the base belt. This makes the belt stronger and enables to adopt small pulley diameter. The major application is power transmission. The minimum pulley diameter is 16mm. Please ask us, however, if the diameter has to be less than 16mm.

Which endless belt is recommended for power transmission?

Ring-rolled seamless steel beLTDYMCO Ring-rolled seamless steel belt is recommended.It goes with small-diameter pulleys. The flatness including the welded section promises precise power transmission. Upon your inquiry we calculate the appropriate dimensions of the belt.

Which belt is recommended to use at 200 degrees C?

Heatproof steel belt is available. There appears very little distortion by heating. The belt does not wander if EPC (Edge Positioning Control) is prepared.

How wandering of belts can be prevented?

Crowned pulley, V-guides, and EPC (Edge Positioning Control) are the options. Each one has both strong and weak points. Please consult us on this matter.

Can you give us any tips for the thickness inspection of a workpiece?

We select a flat welded belt. DYMCO Welded endless steel belt or DYMCO Ring-rolled seamless steel belt. DYMCO Welded endless steel belt, DYMCO Ring-rolled seamless steel beltis the best.

Do you have any standard metal sleeves or any sleeves in your stock?

We produce upon order. We can make even 1 piece. We do not carry stocks. Dimensions in micron order are available.

How is a seamless sleeve made and what features does it have?

We have 3 methods.

Seamless type:

One is DYMCO's original flow-forming technology which belongs to rolling methods, and the other is electro-forming. We recommend either one depending on specifications.

Welded type:

A thin steel plate is rolled and both ends are connected by bud arch welding of plasma, TIG or laser. There appears a little fine surface irregularity in this welded section. Producible minimum diameter is 30mm. This type is recommended for a small lot of micron-order specifications, short delivery and cost efficiency.

Drawn type

The welded tube is drawn with a plug and a die. The surface fluctuation on the welded part is less than welded type. However there is a large difference in strength between the base belt and the welded part. The maximum outside diameter is 30mm. Yet we have stock by every millimeter. This is only the product we can supply from stock and offer immediate delivery.