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Timing Belts, Pulleys

At MISUMI, your opinions are of the utmost importance. We have taken up many of your requirements such as the gear form, material and operating environment of the timing belt.
That's why MISUMI has developed product lineups that meet the customers' needs.
Feel free to visit our timing belt and pulley selection website.

[Timing Belt/Pulley Details]
Suitable products can be selected based on specifications such as belt shape, width, number of gears and pulley shape. The price and delivery date can be checked on the spot, which helps drastically reduce the time it takes to make estimates. CAD data can also be downloaded then and there.

Automation Components

Timing Belts, Pulleys

FAQ Timing belt and pulley

Specification
Usage and application

Question: What standard does each type of Timing belt compatible?

Answer: Here are compatible standards for each type of Timing belt:
• MXL, XL, L and H type: JIS standard and ISO standard
• T type : DIN standard from Germany
• S type: MITSUBOSHI BELTING and BANDO CHEMICAL standard
• P and UP type: TSUBAKIMOTO CHAIN standard
• GT type: GATES UNITTA ASIA standard
• MA type: NOK standard

Question: How can I select Idler with teeth to align with Timing belt?

Answer: Please select Idler with teeth in the same profile as Timing belt (Belt shape)
(Example: MXL type belt should be combined with MXL type pulley and idler)

Question: Please explain about each digit of model no. of Timing Pulley. What is "24" of "ATP24XL025…" or "HTPA24S5M…" stand for?

Answer: It indicates the number of teeth.
Model no. is arranged as following:

Example :	HTPA	20	S5M	150	B	NK10
	Model	Number of teeth	Belt Type	Width	Shape of Pulley	Specification and diameter of shaft hole

Question: What is PLD?

Answer: PLD is distance between pitch line and root of teeth for belt with teeth.
It indicates the different between distance of Pulley and pitch diameter (PD) and teeth end diameter along the radius axis.
Obtained by PLD＝ (PD－OD) /2

Question: Can I converse torque into required transmission power?

Answer: Use the following formula for conversion:
Tq=tq×Ks
Pd=Tq×n/9550
Tq : designed torque (N・m) tq : transmission torque (N・m) n : rotation speed (rpm) Ks : Overload Factor Pd : required transmission power (kW)

Question: How can I calculate the transmission power in speed reducer unit?

Answer: Please calculate the driving force with speed reducer unit.
For example, if speed reducer decrease speed into 1/2 times, power transmission will be 2 times.

Question: Which length is the belt circumference of Timing belt?

Answer: Length of inner core of Timing belt.

Question: What is the number displayed in Belt No. indicates?

Answer: Belt circumference.

Question: What is service life span of Timing belt?

Answer: Life span is depending on operating condition (designed driving force, speed of pulley, etc.) so it cannot identify as exactly number.
In addition, Timing belt is consumable product, so it is recommended to replace new belt earlier before it broken or set up periodic interval for replacing new one.

Question: What is "NFC" alteration for timing pulley?

Answer: It is an option for disassembly flanged, and shipping as attachment.

Question: Can Timing belt operating in environment that expose to water or oil?

Answer: It is not recommended to operate in those environments.
Timing belt may get swelling and become premature breakage.

Question: Can I change the width of belt to be wider than item listed in Catalog?

Answer: No.

Question: Does Timing belt Polyurethane type waterproof?

Answer: No waterproof property.
Polyurethane may get swelling and worn out if exposed to water for long time.

Question: Do you offer Timing belt for cleaning room?

Answer: No.

Question: What is the minimum R for idler installed at the back side under Timing belt.

Answer: It should be 1.2 times of minimum R or higher.
Idler installation point should near to the small pulley, try selecting idler with no crown.
In addition, angle of belt curve must be 170° or larger.

Question: Shaft hole is of pulley is round hole P + tapped thread. Was the tapped process aimed into the center of teeth?

Answer: Yes.

Question: Can I order flange separately?

Answer: Yes, please request quotation via Quotation request for item not listed in MISUMI FA Catalog service.

Question: Can I order Timing Pulley with no shaft hole?

Answer: No.
Shaft hole was bored to be the minimum H hole.

Question: Do you have a recommend dimension tolerance for shaft of Surface pressure pulley?

Answer: We recommend for dimension tolerance g6.

Question: Can I request quotation for Timing Pulley with larger shaft diameter than item listed in catalog?

Answer: Please request quotation via Quotation request for item not listed in MISUMI FA Catalog service.

Question: How can I fix noisy timing belt?
Should I apply grease or lubricating spray to suppress it?

Answer: Please apply special grease for belt.
However, MISUMI does not offer that type of grease, please contact directly to the supplier.