Timing Pulleys - L Type

Brand :

MISUMI

Caution

Please note that the swaged flange options, NFC, RFC, and LFC, are not reflected in the CAD data.
Please check the content on our website as the PDF does not contain the most up-to-date information.

Product Description

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Optimize your power transmission systems with Timing Pulleys – L Type, engineered for precise motion control in synchronous drive applications. These pulleys are specifically designed to pair seamlessly with L Type timing belt and pulley configurations, offering superior torque transmission, smooth operation, and minimal backlash.

Construction and Materials
• Crafted from a range of high-performance materials, these timing pulleys are built for durability and accuracy:
• Pulley Body: Available in extra super duralumin aluminum alloy, S45C equivalent steel, and corrosion-resistant SUS304 stainless steel—each selected for optimal strength-to-weight ratio and wear resistance.
• Flanges: Made from lightweight aluminum alloy or SPCC for structural support and belt retention.

Surface Treatments
• Advanced surface finishes enhance both aesthetics and performance:
• Clear anodize and black anodize for corrosion resistance and wear protection.
• Hard clear anodize (300HV~) for increased hardness in demanding environments.
• Electroless nickel plating and black iron oxide coating to resist rust and enhance longevity.

System Compatibility
• These pulleys are designed to work effortlessly with L Type timing belt systems:
• Standard Timing Belts
• Long Timing Belts (Iron Rubber and Polyurethane)
• Open-End Belts (Polyurethane, Chloroprene Rubber)

Applications
• Ideal for automation systems, packaging machinery, precision conveyors, robotics, and CNC applications, the timing pulley ensures synchronized movement and accurate positioning.
• Whether you're building a new system or upgrading an existing one, the timing belt pulley combination offers reliable perf

■L type

● Pulley Shape

Tooth Profile
(ISO Standard Rack Dimensions)

Shape A

Shape B

Shape D

* H Dimension L050=5, L075=8, L100=11

[ ! ]1

[ ! ]2

Tooth groove dimensions slightly vary according to the number of teeth. (Pitch: 9.525mm)
[ ! ] For aluminum flanges, the flange thickness is 1.5.
[!] 1 t = 2.0 for 60 and 72 toothed pulleys (Machined Flange)
[ ! ] The tolerance of the tap position dimension from the boss end face and pulley end face is ±0.3.
[ ! ] Shaft Bore Specs. H (Round hole), V or F (Stepped Hole), Y (Both Sides Stepped Hole) and WB (Two-stepped Hole) do not have tapped holes.
[ ! ] Unless otherwise specified except for teeth and F dimensions, the dimension tolerance conforms to JIS B 0405 Class m.

● Shaft Bore Specification
Select shaft bore spec mark and each dim. from the table below.

[ ! ] Surface treatment may not be applied to the shaft bores.

H round hole

P Round Hole + Tap

N New JIS Keyway + Tap
C Old JIS Keyway + Tap

[ ! ] For A-Shape pulley, the screw holes are set at around 120° to keep away from peaks.
　

[ ! ] Specify NK10 when selecting the shaft bore dia. 10
and the keyway width 4.0 mm.

V Stepped Hole

F Stepped Hole
(Counterbored Hole on the Hub Side)

Y Both Ends Stepped Hole

WB Two-stepped hole

[ ! ] Z - d ≥ 2
[ ! ]3.0 ≤ J ≤ W－3.0

[ ! ] Applicable to Shape B only
[ ! ] Z - d ≥ 2
[ ! ]3.0 ≤ J ≤ L－3.0

[ ! ] Applicable to Shape A only
[ ! ]Q (R)－Y ≥ 2
[ ! ]S+T ≤ W－3.0
[ ! ]S (T) ≥ 3.0

[ ! ] Applicable to Shape A only
[ ! ]Q－R ≥ 2
[ ! ]R－WB ≥ 2
[ ! ]S+T ≤ W－3.0
[ ! ]S (T) ≥ 3.0

■Tapped Hole Dimensions
(Shaft Bore Specs.: P, N, C)

d_H7 Shaft Bore I.D.	M (Coarse)	Accessory Set Screws
6 to 12	M4	M4 × 3
13 to 17	M5	M5 × 4
18 to 30	M6	M6 × 5
31 to 45	M8	M8 × 6
46 to 70	M10	M10 × 8

■Belt Nominal Width / Dimensions

mm	Nominal
mm	L050	L075	L100	L150
A	14	21	27	40
W	19	26	32	45
L Number of Teeth 10 to 59	31	38	44	57
L Number of Teeth 60, 72	39	46	53	57

Type	Belt Width				[M] Material		[S] Surface Treatment	[A] Accessory Set Screws
	12.7 mm (1/2 in)	19.1 mm (3/4 in)	25.4 mm (1 in)	38.1 mm (1.5 in)	Pulley	Flange ^*
	L050	L075	L100	L150	Pulley	Flange ^*
ATPA	●	●	●	●	Extra Super Duralumin Aluminum alloy	Aluminum alloy	Clear Anodize	SUS304
ATPB	●	●	●	●			Black Anodize
ATPK	●	●	●	●			Hard Clear Anodize
ATPN	●	●	●	●			Electroless nickel plating
ATPT	●	●	●	●	S45C Equivalent	SPCC	—	SCM435 (Black Oxide)
ATP	●	●	●	●			Black Oxide Coating
ATPP	●	●	●	●			Electroless nickel plating
ATPS	●	●	●	—	SUS304	SUS304	—	SUS304

[ ! ]Flange is already swaged, and set screws are included for Shaft Bores P, N and C.
* Flange is not included for Shape D.
[ ! ] Due to vibrations during transportation, the set screw may become detached from the main body.