Idlers XL
Brand :
MISUMI
Caution
Product Description
Idlers XL
Idlers for timing pulleys are an economy item, The price is cheaper than the MISUMI standard product.They offer a wide variety of sizes to choose from.
[Feature]
● Belt Width Used (mm.) : 6.4, 9.5 and 12.7
● Belt Width Used (Inch.) : 0.25, 0.37 and 0.5
● Number of Teeth : 16, 18, 20 and 22
● Shaft Bore Diameter (mm.) : 5 ,6 and 8
● Bearing Position : Central Single Bearing and Both Sides Bearing
● Material :
Body and Flange : Aluminum Alloy
● Surface treatment : Clear Anodized
[Application]
Idlers for timing pulleys are used to maintain proper tension and alignment in timing belt systems
This series of products is expected to be closed from December 2025, while stocks last. Recommend similar product series,pleaseClick
■Dimensional specification table (center bearing type)
■Dimensional specification table (both sides bearing type)
For detailed sales models, please refer to the MISUMI official website.
XL type timing belt idler, suitable for MISUMIStandard timing beltandEconomy timing belt。
Product Overview
As a mechanism for transmitting the rotational power generated by the motor, timing pulleys, timing belt idlers and timing belts are usually widely used in design.
The transmission and transmission functions are achieved through the engagement between the timing belt pulley, the timing belt idler wheel and the timing belt teeth.
The transmission and transmission functions are achieved through the engagement between the timing belt pulley, the timing belt idler wheel and the timing belt teeth.
Product Features
■Tooth Profile Engagement of MISUMI Economy series Idlers
・The tooth profile of MISUMI's Economy idler gear complies with JIS and ISO standards, and it rotates more smoothly when matched with the standard belt tooth profile.
※Timing belt brand: Mitsuboshi ※Examples of problems occurring in marketed products
■Misumi Economy idler wheel rotation stability
・The tooth profile of MISUMI's Economy idler gear complies with JIS and ISO standards, and it rotates more smoothly when matched with the standard belt tooth profile.
※Timing belt brand: Mitsuboshi ※Examples of problems occurring in marketed products
■Misumi Economy idler wheel rotation stability
| ・Misumi Economy series idler Using MISUMI Economy bearings, More stable quality and less noise |  |
・The tooth surface runout control of the Economy idler gear is consistent with that of the standard product, and the belt drive is more stable
(Unit: mm)
| Pulley tip circle diameter d0 | 5.96≤d0≤203.20 |
| Runout Tolerance (Circumferential Runout) | ≤0.13 |
Dimensional Drawing
 Material |  Surface Treatment | |
| Body | Flange | |
| Aluminum Alloy | Aluminum Alloy | Clear Anodized |
Specification Overview
■Dimensional specification table (center bearing type)
| Type | Shaft hole diameter d | P.D. | O.D. | F | E | A | W | S | Bearing model and size | ||||
 Type |  Number of teeth |  Applicable Belt | No. | D | B | ||||||||
| C－AATF | 18 | XL025 | 6 | 29.11 | 28.6 | 36 | 24 | 7.5 | 12.5 | 3.25 | 626ZZ×1 | 19 | 6 |
| XL037 | 11 | 16 | 5 | ||||||||||
| 22 | XL050 | 8 | 35.57 | 35.07 | 45 | 30 | 14 | 19 | 5.5 | 628ZZ×1 | 24 | 8 | |
| 25 | XL050 | 10 | 40.43 | 39.92 | 48 | 35 | 14 | 19 | 5.5 | 6000ZZ×1 | 26 | 8 | |
■Dimensional specification table (both sides bearing type)
| Type |  Applicable Belt |  Shaft hole diameter d | P.D. | O.D. | F | E | A | W | Dh | Bearing model and size | |||
 Type |  Number of teeth | No. | D | B | |||||||||
| C－AATFW | 16 | XL025 | 5 | 25.87 | 25.36 | 32 | 20 | 7.5 | 12.5 | 11 | 695ZZ×2 | 13 | 4 |
| XL031 | 9 | 14 | |||||||||||
| XL037 | 11 | 16 | |||||||||||
| XL050 | 14 | 19 | |||||||||||
| 18 | XL037 | 6 | 29.11 | 28.6 | 36 | 24 | 11 | 16 | 13 | 696ZZ×2 | 15 | 5 | |
| XL050 | 14 | 19 | |||||||||||
| 20 | XL037 | 8 | 32.34 | 31.83 | 40 | 27 | 11 | 16 | 16.5 | 698ZZ×2 | 19 | 6 | |
| XL050 | 14 | 19 | |||||||||||
For detailed sales models, please refer to the MISUMI official website.Usage Method
| Usage case diagram | How to use timing belt idler pulley and timing belt |
 | ①For belt tensioning Adjust the tension on the inside of the timing belt via the timing belt idler |
 | ②For linear drive Reciprocating motion via self-end timing belt |
| Usage case diagram | How to use timing belt idler pulley and timing belt |
 | ③Conveyance Plates are conveyed by two timing toothed belts. |
 | ④For traction and transmission The belt clamps the workpiece and transfers it |
XL type timing belt idler, suitable for MISUMIStandard timing beltandEconomy timing belt。Example of Use
■Mechanism name
Belt Tension Device (Manual)
■Mechanism function
1. Move the roller on the adjustment side and tighten it while the conveyor belt is open.
2. For multiple driving applications, the engagement rate can be improved by setting the roller in the middle position.
■Function of the Timing Belt Idler
1. Fix the assembly distance of the belt through the timing belt idler
At the same time, the auxiliary polyurethane roller tensions the belt.
For details, please clickBelt tension device case
Belt Tension Device (Manual)
■Mechanism function
1. Move the roller on the adjustment side and tighten it while the conveyor belt is open.
2. For multiple driving applications, the engagement rate can be improved by setting the roller in the middle position.
■Function of the Timing Belt Idler
1. Fix the assembly distance of the belt through the timing belt idler
At the same time, the auxiliary polyurethane roller tensions the belt.
For details, please clickBelt tension device case
Related Industries
| Semiconductor | Automotives | Smartphones | ||
 |  |  | ||
| Medical | Electronic & Electrical Appliances | Robotics | ||
 |  |  |
Precautions
① If you have requirements for rust prevention, please give priority to products made of Aluminum Alloy, stainless steel SUS304, and electroless nickel plating surface treatment.
Please click
Anti-rust performance and maintenance of metal materials and surface treatments
Please click
Anti-rust performance and maintenance of metal materials and surface treatmentsRelated Documents
Timing Belts, Timing Pulleys, Idler Technical Information
①Information on selecting timing pulleys and timing belts, tension, etc. (Transmission).
②Selection data for timing pulleys and timing belts, tension data, etc. (Transmission and conveying).
③The main causes and countermeasures for damage, breakage, abnormal noise, etc. of the timing belt.
④Reference materials on timing belt replacement intervals.
⑤Timing pulley and idler dimension tolerance information.
①Information on selecting timing pulleys and timing belts, tension, etc. (Transmission).
②Selection data for timing pulleys and timing belts, tension data, etc. (Transmission and conveying).
③The main causes and countermeasures for damage, breakage, abnormal noise, etc. of the timing belt.
④Reference materials on timing belt replacement intervals.
⑤Timing pulley and idler dimension tolerance information.
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