Timing Pulleys L

MISUMI

Product Overview

Usually, timing pulleys and timing belts are widely used to design mechanisms for transmitting rotational power generated by motors.
Driving and transmission are realized through the engagement between the teeth of timing pulleys and timing belts.

Dimensional Drawing

Specifications Overview

Part Number				Material		Surface Treatment
Belt Width 12.7mm (1/2inch)	Belt Width 19.1mm (3/4inch)	Belt Width 25.4mm (1inch)	Belt Width 38.1mm (1.5inch)	Pulley	Flange
A: 14　W: 19　L:31 (39)	A: 21　W: 26　L:38 (46)	A: 27　W: 32　L:44 (53)	A: 40　W: 45　L: 57	Pulley	Flange
E-ATPA□□L050	E-ATPA□□L075	E-ATPA□□L100	E-ATPA□□L150	Aluminum Alloy	Aluminum Alloy	Clear Anodized
E-ATPB□□L050	E-ATPB□□L075	E-ATPB□□L100	E-ATPB□□L150			Black Anodized
E-ATPK□□L050	E-ATPK□□L075	E-ATPK□□L100	E-ATPK□□L150			Hard Clear Anodize^＊
E-ATP□□L050	E-ATP□□L075	E-ATP□□L100	E-ATP□□L150	Equivalent to S45C	SPCC	Black Oxide Coating
E-ATPP□□L050	E-ATPP□□L075	E-ATPP□□L100	E-ATPP□□L150	Equivalent to S45C	SPCC	Electroless Nickel Plating

*Film hardness of hard clear anodize is 300HV~.

Values in () for dimension L apply to the number of teeth 60 or 72.

The flange is riveted, and set screws are included for shaft bore specs. P, N or C.

If there are requirements for rust prevention, give priority to products made of aluminum alloy, stainless steel SUS304 and with surface treatment of electroless nickel plating.
For anti-rust performance and maintenance of metal materials and surface treatment, click

here.

Specification Table

Part Number			Pulley Shape	Shaft Bore Specs.	Shaft Bore Specs. (1mm increments)						P.D.	O.D.	D	F	E
Type	Number of Teeth	Type & Nominal Width			H Round Hole		P Round Hole + Threaded Hole		N Keyway Hole + Tap
					d_H7
					Shape A	Shape B・D	Shape A	Shape B・D	Shape A	Shape B・D
(Aluminum Alloy) E-ATPA E-ATPB E-ATPK (S45C equivalent) E-ATP E-ATPP	10	L050	A B	H P N	6～20	6~18	6~14	6~14	8~14	8~14	30.32	29.56	22	36	24
	12	L050・L075			8～26	8~23	8~18	8~18	8~18	8~18	36.38	35.62	27	45	30
	14	L050 ＊A ：14 ＊W ：19 ＊L ：31 (60・72＝L：39) L075 ＊A ：21 ＊W ：26 ＊L ：38 (60・72＝L：46) L100 ＊A ：27 ＊W ：32 ＊L ：44 (60・72＝L：53) L150 ＊A ：40 ＊W ：45 ＊L ：57			8～31	8~26	8~23	8~20	8~21	8~20	42.45	41.68	30	48	35
	15				8～31	8~26	8~23	8~20	8~23	8~20	45.48	44.72	30	48	35
	16				10～36	10~28	10~28	10~22	10~23	10~22	48.51	47.75	32	55	40
	17				10～36	10~30	10~28	10~24	10~26	10~23	51.54	50.78	34	55	40
	18				10～41	10~32	10~33	10~26	10～34	10~23	54.57	53.81	36	61	45
	19				12～46	12~34	12~34	12~28	12～35	12~25	57.61	56.84	38	67	50
	20				12～46	12~36	12~34	12~30	12～35	12~26	60.64	59.88	40	67	50
	21				12～52	12~38	12~40	12~30	12～37	12~26	63.67	62.91	42	70	56
	22				12～53	12~41	12~44	12~33	12～38	12~30	66.70	65.94	45	80	60
	24				12～63	12~46	12~49	12~38	12～44	12~30	72.77	72.00	50	87	67
	25				12～63	12~46	12~49	12~38	12～45	12~30	75.80	75.04
	26				12～63	12~46	12~49	12~38	12～45	12~30	78.83	78.07
	28				12～71	12~46	12~57	12~38	12～50	12~30	84.89	84.13		95	75
	30				12~72	12~52	12~62	12~42	12～55	12~34	90.96	90.20	56	99	80
	32				14~76	14~52	14~65	14~42	14～55	14~34	97.02	96.26	56	104	84
	34				14～83	14~59	14~70	14~49	14～55	14~41	103.08	102.32	63	111	90
	36				14～85	14~59	14~70	14~49	14～55	14~41	109.15	108.39		123	102
	38				15～85	15~59	15~70	15~49	15～55	15~41	115.21	114.45		127	105
	40				15～85	15~59	15~70	15~49	15～55	15~41	121.28	120.51	63	131	110
	42				16～85	16~67	16~70	16~57	16～55	16~49	127.34	126.58	71	135	115
	44				16～85	16~67	16~70	16~57	16～55	16~49	133.40	132.64		140	120
	46				16～85	16~67	16~70	16~57	16～55	16~49	139.47	138.71		144	125
	48				16～85	16~67	16~70	16~57	16～55	16~49	145.53	144.77		152	130
	50				16～85	16~67	16~70	16~57	16～55	16~49	151.60	150.83		160	140

Z-d≥2 for Shaft Bore Specs. V.

Q(R)-d≥2 for Shaft Bore Specs. Y.

For shape D, dimension E is the value in ( ).

Shaft Bore Dia. 4.5 and 6.35, if falling within the selection range, can be selected for Shaft Bore Specs. H, P, V and F.

Specify NK10 when New JIS Keyway Hole + Threaded Hole with shaft bore diameter of 10 and keyway width 4.0mm (height 1.8mm) is requested. For detailed dimensions of keyway, please click

here.

NK10, if falling within the selection range, can also be selected for Shaft Bore Specs. N.

Shaft Bore Dia. 8, 9, 11, 13, 14, 17 and 21~50 are not available for Shaft Bore Specs. C.

Shaft Bore Dia. 9 and 51~54 are not available for Shaft Bore Specs. N.

Product Features

Feature 1: L specification timing pulleys, suitable for general torque transmission design and high speed conveyance design.
Feature 2: L specification timing pulleys provide great transmission accuracy and efficiency, making them suitable for high-precision transmission and conveyance designs.
Feature 3: L specification timing pulleys have a wide range of load and speed ratios, applicable to most mechanisms and equipment.
Feature 4: MISUMI timing pulleys satisfy industrial standards, enabling for a reliable purchase and simple equipment maintenance.
Feature 5: MISUMI timing pulleys are available in various materials and suitable for a wide range of design environments.
Feature 6: MISUMI timing pulleys are made with meticulous attention to detail, allowing customers to make purchases with more confidence.

Features of MISUMI Timing Pulleys L timing pulley

①Well processed teeth→High processing accuracy

②Threaded hole deburred→Longer service life of timing belt

③Evenly press-fitted retainer→Firm retainer, not easy to fall off

④Beautiful tooth shape→Precisely engaged belt, with high concentricity

Usage Method

Usage Method Example Drawing	Usage Method of Timing Wheel and Timing Belt
	①Driving (The driven wheel is driven by the driving wheel for transmission)
	②Linear driving (Reciprocating motion is carried out through the free-end toothed timing belt.)

Usage Method Example Drawing	Usage Method of Timing Wheel and Timing Belt
	③Conveyance (Plates are conveyed by two toothed timing belts)
	④Traction transmission (Workpieces are clamped and transmitted by the belt)

Shape S timing pulleys, suitable for MISUMI standard and economy series S specification belts.

Precautions

①For Shaft Bore Specs. P (round hole+threaded hole) or N, the attached set screws are shipped in the same package (may drop in the packaging bag).
②There is no threaded hole for Shaft Bore Specs. H (round hole).
③There may be no surface treatment in the shaft bore.
④t=2.0 for 60 and 72 toothed pulleys (Cut Flange).
⑤For the N keyway hole, the position relation between keyway and tooth is not fixed.

Example of Use

Example drawing of a ball spline lifting & rotating mechanism designed using MISUMI timing pulley

Equipment Name: Ball Spline Lifting & Rotating Mechanism
Purpose:
Rotates the workpiece received from the previous process 90 degrees to lower it and transfers the workpiece to the next process.
Purpose of Timing Pulley:
The transmission of the timing pulley changes the direction of the collet. (Applicable to timing pulleys with specifications MXL, XL, L and H)

For details, please click

here.

Application Industries

Semiconductor	Automotive	Smart Phones

Medical	Electronic & Electrical	Robotics

Idler	Toothed Timing Belts L	Toothed Timing Belts

Representative model: AATFW30-L100-20	Representative model: TBN225L100	Representative model: C-TBN322L100