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FAQ

Q

Is there a specific direction to install the belt?

A

Raw Edge V-belts and V-ribbed Belts are not specified in which direction they are to be installed, but some Timing Belts and Variable Speed Belts are specified.

Q

Is the Cogged V-belts an engaged transmission?

A

This is a friction transmission type that transmits power by the side of the belt.

Q

Is there a problem with the thread fraying on the back of the belt?

A

There is no problem.

Q

Some Star Fit™ have different length markings from the genuine ones. Is there any problem with the fit?

A

Some part numbers may differ in size due to differences in belt manufacturers' thinking, but there is no problem with the fit.

Q

What is Star Fit™? Is it a different product from a V-ribbed belt?

A

Star Fit™ are special V-ribbed belts for specific engines where the pulleys do not move. It is made of a different material from ordinary V-ribbed belts and can be installed without moving the pulleys, while maintaining the proper tension.

Q

Are cracks the sign of belt replacement?

A

The standard time for belt replacement depends on the material of the rubber.By changing the rubber material from CR to EPDM, cracking is less likely to occur, but abrasion still occurs.Abrasion condition should also be used as a replacement guideline.

Q

The belt has broken and come apart. What are the possible causes?

A

As belt abrasion progresses, the belt may break.

Industrial Power Transmission Belts and Related Products

Q

Are the V-belts RoHS2 compliant?

A

RoHS2 compliant. Please click herefor details. If you would like to have a certificate issued, please contact the dealer where you purchased the product or the nearest sales office that handles belts.

Q

When should the V-belt be replaced and what is its life expectancy?

A

We cannot give an answer for the life expectancy, as it depends on the customer's usage conditions. If the belt is cracked or missing, please replace it immediately.

Q

What is the initial elongation of the V-belt?

A

Initial elongation of V-belts is 1-2% for both standard and red V-belts. The belt must be retensioned within 24 hours of tensioning.

Q

What is the material of the V-belt?

A

Standard V-belts are made of natural rubber-based material.Red Label V-belts and MAXSTAR WEDGE belts use chloroprene rubber.

Q

If I change from a standard V-belt to a red V-belt, will it extend the life of the belt?

A

It depends on the conditions of use. However, if the machine has no problem using a standard V-belt, replacing it with a red V-belt is not expected to significantly improve the life of the machine.

Q

I am using V-belts for multiple hangings, but there is a difference in belt length and the belts are flapping. Is there a better way?

A

V-belts vary in length. If you are concerned about length differences, please specify as matched set.

Q

I am using a product from other manufacturers. Can I use the Doctor Tension Type IV to measure tension?

A

Products from other manufacturers can also be used. Since the standard values for unit weight and unit mass of belts differ depending on the manufacturer, please contact the belt manufacturer you are using for the unit weight.

Q

What is the material of the timing belt?

A

The material of the timing belt is below.
【Rubber Belt】Tooth:Chloroprene Rubber Tensile Cord:Glass Code Tooth Fabric:Nylon
【Urethane Belt】Tooth:Polyurethane Tensile Cord:Aramid or Steel wire
Please inquire separately for other MEGA TORQUE series and materials with special specifications.

Q

What is the amount of backlash between the timing belt and pulley?

A

Please inquire separately for backlash values between each belt and standard pulleys. The backlash value we provide is the gap between the belt teeth and pulley teeth under static conditions. Backlashless pulleys are available depending on the tooth profile.

Q

How can I improve positioning accuracy?

A

There is a product called MEGA TORQUE EX with improved positioning accuracy.
Please consider switching to MEGA TORQUE EX

Q

What is the difference between a urethane belt and a rubber belt?

A

For normal transmission applications, rubber belts with a wide range of sizes are used. If scattering of rubber powder is a concern, urethane belts are used, as rubber powder is less noticeable.

Q

Is the belt compatible with belts from other manufacturers?

A

Timing belt G and timing belt U (MXL, T80, XL, L, H, XH, XXH, etc.) are ISO standard products and are compatible with all companies. Round tooth type products such as SUPER TORQUE series and MEGA TORQUE series are not interchangeable except for some manufacturers.

Q

How should I maintain the timing belt?

A

The timing belt is maintenance free. The installed tension of the belt will decrease slightly in the first few hours of operation due to the pulleys becoming more familiar with each other. After installation, run the belt for about 1 minute (or 10 rpm for slower speeds) to allow it to acclimate, and then tension it at the specified tension. There is no need to re-tension the belt after that.
※Re-tensioning the timing belt may cause poor engagement and shorten the life of the belt.

Q

Can I apply grease to the surface of the timing belt?

A

Although there is no problem if grease gets on the belt, applying grease to the belt is not recommended.

Q

Is it possible to manufacture timing belts in sizes not listed in the catalog?

A

Belts are manufactured using molds.
Sizes not listed in the catalog cannot be manufactured due to lack of molds.

Q

Is there a specific time to replace the timing belt?

A

If the belt is cracked or missing, replace it immediately. In order to minimize downtime, especially for heavy-duty machines, please include cracks or missing belts in periodic inspections and replace the belt before it is damaged.
Click here for the document.

Q

Can it be used in clean rooms?

A

Rubber timing belts generate dust even in bareback specifications, which generate little dust. When using the product in a clean room, please take measures such as installing covers around the belt.

Q

What is the heat resistance temperature of the timing belt?

A

The heat resistance temperature of the standard belt is -30°C to 80°C.However, if used outside of room temperature, the life of the product may be shortened.If you require heat resistance for operating temperatures up to 100°C, use a belt with heat-resistant specifications.Please inquire separately for details on heat-resistant specifications.

Q

Can you manufacture belts in widths not shown in the catalog?

A

Basically, the standard widths listed in the catalog are available. If you require a belt width not listed in the catalog, please contact our sales representatives or distributors.

Q

What is the unit mass?

A

Unit weights are listed in the catalog. Please check the catalog.
Click here to download catalog.

Q

How should I measure the belt installation tension?

A

There are two ways to measure belt tension: by deflection load or by sound waves.Use a pencil type tension meter when measuring by deflection load, or use a sonic tension meter Doctor Tension Type IV when measuring by sound waves.
For more information about Dr. Tension Type IV, please click ※MEGA TORQUE GIIP, MEGA TORQUE GⅢ, and Giga Torque GX cannot be measured with deflection load.

Q

Is the timing belt compliant with the RoHS2 directive?

A

RoHS2 compliant. Please click here for details.If you need a certificate, please contact the dealer where you purchased the product or the nearest sales office that handles belts.

Q

What is the difference between MEGA TORQUE GIIP and GIII?

A

Improved materials have greatly increased transmission capacity.
In addition, standard pulleys can now be used for MEGA TORQUE GⅢ.

Q

If a belt does not have a size label on it, but only a part number, how can I buy it?

A

The belts listed in the part numbers are exclusive belts for a specific machine manufacturer (OEM products), so please purchase genuine parts from the machine manufacturer.

Q

The belt circumferential speed is limited to 33 m/sec. What happens if the belt circumferential speed is exceeded?

A

Durability and service life are greatly reduced.
In addition, the dynamic balance of the pulley must be carefully balanced because of the increased noise level.

Q

How should the tension pulley be installed?

A

When installing on the inner side of the belt, install on the loose side during running, close to the large pulley.
The inner tension pulley diameter should be larger than the minimum pulley diameter in the catalog.
For outside installation, the belt bending angle should be 140° or more (160° or more for MEGA TORQUE GⅢ and Giga Torque GX) at a position close to the small pulley.
The outer tension pulley diameter should be at least 20% larger than the minimum pulley diameter in the catalog.
Click here for the document.

Q

What is the transmission efficiency of the timing belt?

A

Transmission efficiency is almost 100%.
However, since the motor shaft is loaded by the belt tension, power loss may occur and the transmission efficiency may be lower than 100%.

Q

What size are the shaft holes for standard pulleys?

A

The minimum shaft hole diameter d (mm) is listed in the pulley dimensions table on the product introduction page of this website.
A pre-hole is machined to allow machining to its minimum shaft hole diameter (H7 tolerance).

Q

What is the material of the standard pulley?

A

The steel material is mainly S25C, but some free-cutting steel is used.
High strength aluminum alloy is A2017. Castings are FC200 equivalent.

Q

Is it possible to purchase only the flange of the standard pulley?

A

Flanges only are not available for purchase.

Q

Does the standard pulley have flanges?

A

Two pieces are attached to pulley shapes A and B. Pulley shape C is provided with 1 piece. Pulley shape W is not provided.
Up to 15 flanges can be attached to each pulley for bar pulleys. Please be sure to specify the number of pieces required when purchasing.

Q

Are standard pulleys surface treated?

A

Standard pulleys are not surface treated, but sintered material pulleys are steam treated.
※Some sizes are not supported.

Q

What types of surface treatments are available?

A

Custom-made pulleys are available with customer-specified surface treatment.

Q

 Are there any with a "G" at the beginning of the pulley designation?

A

In the past, G 32S2M0100A was prefixed with "G", but now it is prefixed with "P" to make it easier to distinguish it from the belt. There is no change in the specifications.
Notation of past:G 32S2M0100A

Present notation:P 32S2M0100A

Q

What are the shaft hole diameters min and max listed in the catalog?

A

min=minimum shaft hole diameter
max=maximum shaft hole diameter
Our standard pulleys are shipped with the bottom hole machined. Please use this as a guide when machining by the customer.

Q

Can you manufacture belts with a number of teeth not listed in the catalog?

A

The number of teeth that can be manufactured differs depending on the specifications and shape. Please contact us for details.

Q

Can you manufacture pulleys in materials not listed in the catalog?

A

We can produce pulleys as made-to-order pulleys.
If you provide us with a drawing, we will provide you with a quotation through our distributor.

Q

Are CAD drawings available?

A

It can be downloaded from our website. Please download from here.

Q

How should the flange be installed?

A

There are two types of flange attachment methods: caulking and screw fixing.
For details, please refer to "Flanges" in the timing belt transmission design document.
Click here for the document.

Q

Are backlashless pulleys available?

A

Some tooth shapes are available. Please contact us for details.

Q

Are the timing pulleys RoHS2 compliant?

A

RoHS2 compliant. Please for details. If you would like to have a certificate issued, please contact the dealer where you purchased the product or the nearest sales office.

Q

How can I purchase a belt?

A

We deal through distributors and do not sell directly. Please contact the distributor.

Q

How can I get a catalog?

A

Please contact our distributors or use our catalog request form
You can also download PDF files from our website.

Q

How should STARROPE and SUPER STARROPE be welded?

A

Heat weld.

Q

What is the proper tension?

A

Proper tension varies depending on the conditions of use. The formulas for calculating proper tension are provided in each catalog. Please check each catalog.
For timing belts and V-belts, please use the "Tension Calculator"

Q

What is the difference between V-belt types A/B/C and LA/LB/LC?

A

LA/LB/LC types are belts for agricultural machinery. These belts are thinner than standard V-belts and Red Label V-belts (A/B/C types) and are designed to withstand reverse bending.

Q

What is the bareback specification of the timing belt?

A

The tooth fabric is specially treated to suppress the scattering of rubber powder.

Q

How do I install the timing belt?

A

Please click here to watch the video for more information.

Conveyor Belts, Systems and Related Products

Q

Structure and Names of Conveyor Belts (Tailorbelt™)

A

It consists of a core fabric which is used to support the tension of the belt and a cover fabric that prevents damage to the core fabric.

Q

The length of Conveyor Belts (Tailorbelt™)

A

Conveyor belt joints are made on a flat spot, so they are manufactured with a "center circumference".

【Fig. 1.the length of the belt】

We are often asked about belt length in terms of "inner circumference". The inner circumference length is the length measured inside the jointed belt, but it cannot be measured exactly due to the thickness of the tape measure and other factors. The same applies to the outer circumference.

Q

Conveyor Belts (Tailorbelt™) length at time of order

A

If there is no special specification, we will manufacture the product with the "center circumference" as above.The "inner circumference" is also converted to the center circumference.

Q

Installation tension of Conveyor Belts (Tailorbelt™)

A

Proper tension is required when installing belts on conveyors.Loose tension will cause the belt to slip, while strong tension will lead to early damage to the joints and damage to the conveyor pulley bearings.
The proper tension must be determined for each condition of use.In practice, it is complicated and difficult to manage the tension of individual belts.We propose a method to control the initial tension by belt elongation.
 Tailorbelt®-U,V,P:0.1-0.3% in belt elongation
 Tailorbelt®-F(FG type):0.05-0.1% in belt elongation
 Tailorbelt®-F(FK type):0.1-0.2% in belt elongation

Q

Installation tension control of Conveyor Belts (Tailorbelt™)

A

Initial belt tension is controlled by belt elongation. For elongation, before installing the belt on the conveyor, put a marked line (preferably 1000 mm long) in the belt as shown in Fig. 3 to tension the belt.
【Fig. 3.belt-marking line】

※Avoid areas near joints and mark lines.
※When the belt width is wide, mark lines on the left and right as shown above.

In the case of Tailorbelt™-U 
 Initial tension (approx.) 0.1-0.3% in belt elongation.
 For a 1000 mm marker, tension is applied so that it is 1 to 3 mm。
 ※The marker line should be measured on a flat area with no bends caused by pulleys or the like.
 ※Tension should be applied equally to the left and right side.

Engineering plastics materials and processed products

Q

Is it possible to manufacture products in non-standard sizes?

A

We also accept orders outside of product standards. Please contact us for details.

Q

Can I also purchase products that are already processed instead of material?

A

We can also handle processed products. We accept orders for as little as one part. We can also handle materials that are not in our lineup, so please feel free to contact us.

Q

We are sometimes asked for a harder resin than POM.
What materials are available?

A

The term "hardness" is often used to refer to the specific properties required. For example, if you want to reduce wear of a part, you can change to a material with higher wear resistance (sliding grade, etc.).
If you want to reduce deformation of the part, you can use a material with higher mechanical strength (e.g., nylon).
Please feel free to contact us first to find out why you need a "hard" resin and what problems you are experiencing.

Q

Are there any resin materials that do not absorb water?

A

Teflon and ultra-high molecular weight polyethylene fall into this category. (Water absorption is less than 0.01%.)
Polyacetal resin also does not absorb water to zero, but dimensional changes do not occur within normal tolerances.

Q

Are there any precautions in handling Cast-Nylon?

A

Since the material absorbs water, care should be taken when using it in places with high humidity or where it is exposed to water. Water absorption may cause slight dimensional changes and degradation of physical properties.
In addition, the material generally has high chemical resistance, but is weak against acids. For details, please refer to our general catalog.

Q

What is the maximum size of Cast-Nylon?

A

Round bars up to φ600 and plates up to 150t can be handled.

Q

Does Cast-Nylon (CN) mean MC nylon?

A

Our cast nylon is generally a "monomer cast nylon" material.
MC Nylon" is a widely known trade name under the trademark of Mitsubishi Chemical Advanced Materials Corporation.
MC nylon" is often used to refer to monomer-cast nylons in general.

Q

Cast-Nylon(MC nylon) is
Is it classified as 6 nylon or 66 nylon?

A

6 nylon. Cast nylon is cast molded by pouring the raw material into a mold and polymerizing it. Cast nylon has higher mechanical strength and lower water absorbency than extruded 6 nylon.

Q

What is the difference between homopolymers and copolymers of POM?

A

The molecular structures are different. As a result, homopolymer (Delrin) has superior mechanical strength to copolymer (Duracon).
On the other hand, copolymer (DURACON) has better chemical resistance and heat aging properties than homopolymer (DURACON).

Q

I'm looking for a material that is resistant to friction and wear.
There are many grades and I don't know which one to choose.

A

Even if we speak of "friction and wear resistance" in general, the specific characteristics required often differ.
For example, if you want to suppress the generation of abrasion powder through use, use a material with high abrasion resistance (such as polyethylene).
If you want to use the product at high surface pressure and high speed, you can change to a material with a higher allowable PV value (sliding grade, etc.).
Please feel free to contact us first to find out what kind of application requires a "friction and wear resistant" resin, and what kind of problems you are experiencing.

Q

What are the characteristics of white, blue, and green ultra-high molecular weight polyethylene?

A

We offer a variety of color shades for use in a wide range of applications. All are standard grades and have the same physical properties.

Electronic Materials and Coating Materials

Silver paste (thermosetting type, die attach)

Q

I am planning to collect and use the surplus after use, is this a problem?

A

Recovery and reuse are not recommended. Please do so at your own risk.

Q

Can you please adjust it so that it can be reused?

A

We are unable to do so.

Q

Are environmentally hazardous substances (10 substances subject to RoHS 2.0) included?

A

Non-containing.

Q

Is it a hazardous material?

A

Non-hazardous materials.

Q

Is it possible to ship overseas?

A

Please contact us.

Q

I would like a sample.

A

Paid samples (minimum order quantity: 100g~) are available.

Q

I would like to know about the delivery date.

A

Basically, 2-3 weeks after receiving an order (depending on the quantity, please consult with us). Please contact us for more details.

Q

Can it be used at temperatures below 100°C?

A

Can be used at temperatures below 100°C, but resistance will increase.

Silver paste (high temperature firing type)

Q

I am planning to collect and use the surplus after use, is this a problem?

A

Recovery and reuse are not recommended. Please do so at your own risk.

Q

Can you please adjust it so that it can be reused?

A

We are unable to do so.

Q

Are environmentally hazardous substances (10 substances subject to RoHS 2.0) included?

A

Non-containing.

Q

Is it a hazardous material?

A

Non-hazardous materials.

Q

Is it possible to ship overseas?

A

Please contact us.

Q

I would like a sample.

A

Paid samples (minimum order quantity: 100g~) are available.

Q

I would like to know about the delivery date.

A

Basically, 2-3 weeks after receiving an order (depending on the quantity, please consult with us). Please contact us for more details.

Copper Paste (High-temperature firing type)

Q

Is atmospheric firing possible?

A

Not available. Nitrogen-fired type.

Q

I don't have a firing furnace, can you fire it for me?

A

We can also provide firing only. Please contact us for details.

Q

Are nano-sized copper pastes available?

A

There is no such thing.

Q

Is there any low-temperature firing available?

A

650°C (low-temperature baking type) is available.

Q

Is plating possible?

A

Possible.

Q

Are environmentally hazardous substances (10 substances subject to RoHS 2.0) included?

A

Non-containing.

Resistive Paste

Q

Is atmospheric firing possible?

A

Not available; CuNi type is nitrogen-fired, LB6 type is nitrogen (vs. alumina) or atmospheric (vs. aluminum nitride).

Q

I don't have a firing furnace, can you fire it for me?

A

We can also provide firing only. Please contact us for details.

Q

What is the resistance range?

A

Please check the item "specification" on the "Resistive Paste" page.

Q

Are environmentally hazardous substances (10 substances subject to RoHS 2.0) included?

A

Non-containing.

Q

Are there any compatible electrodes or glass pastes?

A

Please contact us for more information. Please feel free to contact us.

Active Metal Paste

Q

Is atmospheric firing possible?

A

Not available. Nitrogen-fired type.

Q

I don't have a firing furnace, can you fire it for me?

A

We can also provide firing only. Please contact us for details.

Q

I would like to stack about 300µm.

A

It is possible. Laminated paste is also available.

Q

Are environmentally hazardous substances (10 substances subject to RoHS 2.0) included?

A

Non-containing.

Conductive Paste Blending Materials (Sintering auxiliary agent)

Q

What are the storage conditions?

A

Freezing (-18°C or below) is recommended. Viscosity will increase if stored refrigerated or at room temperature.

Q

Is it dry powder?

A

It is not a dry powder, but a paste.

Q

What is the silver concentration?

A

Depending on the solvent, it is about 88 wt%.

Q

I would like it disposed of.

A

Please send it to our company.(Electronic Materials Department)
4-1-21 Hamazoe-dori, Nagata-ku, Kobe 653-0024, Japan
Electronic Materials Department
TEL:+81-78-682-3985.

Q

Are environmentally hazardous substances (10 substances subject to RoHS 2.0) included?

A

Non-containing.

Q

Is it a hazardous material?

A

Non-hazardous materials.

Q

Is it possible to ship overseas?

A

Please contact us.

Q

I would like a sample.

A

Paid samples (minimum order quantity: 100g~) are available.

Q

I would like to know about the delivery date.

A

Basically, 2-3 weeks after receiving an order. (It depends on the quantity, so please contact us.)

Q

Can you disperse it in a specified solvent or resin?

A

Dispersion trials are also possible for solvents and resins that have not been dispersed before. Please contact us.

Q

How much should be added?

A

Since there is compatibility depending on the paste, please try shaking multiple levels such as 10%, 30%, and 50% addition.

Cu Substrate with filled via

Q

Is it possible to do any process other than the hole-filling process?

A

It is possible. We can handle everything from obtaining substrates to drilling, hole filling, baking, polishing, and plating.

Q

Is it possible to handle only the drilling process?

A

Yes, it is possible. Please contact us.

Q

What is the type of plating?

A

Ni/Au plating.

Q

How long does it take to deliver?

A

It will take about one month after receiving an order (depending on the processing details).

Q

Do you have a track record?

A

We have a track record of being installed in satellites. Our products are also used in other telecommunications applications.

Sub-material for heat press process (cushioning material)

Q

What is the difference between 1ply,2ply,3ply?

A

The difference is the number of cushion layers. (Difference in the amount of cushioning)

Q

What ply is best?

A

It depends on the user's usage, but it is often used in 2ply.

Q

What is the difference between the M and D series?

A

The main difference is the material used for the surface layer: aramid fiber cloth for the M series and fluorine-coated glass cloth for the D series.

Q

What is the maximum size?

A

It is about 2m x 1m. For larger sizes, we will basically cut out a piece from a larger size.

Q

What is the production capacity?

A

Currently the maximum size is about 500 sheets.

Q

What is the end-face treatment for?

A

This is to prevent the leakage of materials coming out of the interior.

Q

What is the thread removal process for?

A

Warp threads are pulled out in advance to prevent thread loss.

Q

How many times can it be used?

A

Depends on operating conditions (pressure, temperature, etc.); 200 times is possible under the conditions of 230°C x 3 MPa x 3 hours holding.

Q

I would like a sample.

A

Please contact us.

Q

Is international shipping available?

A

Possible.

Silver Nano-Ink

Q

What is the particle size?

A

The average particle size is about 20 nm. Smaller particles are also possible.

Q

In what solvents can it be dispersed?

A

Dispersible in water and polar solvents. Please contact us for details.

Q

What is the silver concentration? 

A

60 wt% or less. Adjustments are possible.

Hi-COLOR F/S

Q

Is it possible to purchase in small quantities?

A

Not available.

Q

Do you handle inorganic inks?

A

Currently not available.

Q

Do you offer low-reflective paints and Hong Sangsai paints?

A

Currently not available.