Features of MHS4 Series 4-Finger Type Parallel Type Air Chuck

Double acting, inner-diameter grip JIS symbol

Double acting, internal grip JIS symbol

Double acting, outer-diameter grip JIS symbol

Double acting, external grip JIS symbol

Specifications

Model		MHS4-16D	MHS4-20D	MHS4-25D	MHS4-32D	MHS4-40D	MHS4-50D	MHS4-63D
Cylinder bore size (mm)		16	20	25	32	40	50	63
Applicable fluids		Air
Operating pressure (MPa)		0.2 to 0.6			0.1 to 0.6
Ambient and fluid temperature (°C)		-10 to +60
Repeatability (mm)		±0.01
Max. operating frequency (c.p.m.)		120			60
Lubrication		Not required
Action		Double acting
Effective gripping force (N)^Note) at 0.5 MPa	External grip	10	19	31	55	88	140	251
Effective gripping force (N)^Note) at 0.5 MPa	Internal grip	12	21	35	61	97	153	268
Opening/closing stroke (mm)		4	4	6	8	8	12	16
Weight g		66	110	154	300	390	590	1,095

Note) Values for ø16 to 25 (cylinder inner diameter 16 to 25 mm) are with gripping point L = 20 mm, and for ø32 to 63 (cylinder inner diameter 32 to 63 mm) with gripping point L = 30 mm.
For the gripping force at each gripping location, refer to the data in "Effective Gripping Force" on pp. 631–632 in the manufacturer's catalog.

Structural drawing

Closed condition structure drawing

Open condition structure drawing

Component parts

Number	Part name	Material	Note
1	Body	Aluminum alloy	Hard anodized
2	Piston	Aluminum alloy	Hard anodized
3	Cam	Carbon steel	Heat treated, specially treated
4	Finger	Carbon steel	Heat treated, specially treated
5	Cap	Aluminum alloy	Hard anodized
6	End plate	Stainless steel	-
7	Piston bolt	Stainless steel	-
8	Magnet	-	-
9	Type C retaining ring	Carbon steel	Phosphate coated
10	Piston seal	NBR	-
11	Rod seal	NBR	-
12	Gasket	NBR	-
13	Gasket	NBR	-
14	Cross-recessed flat-head screw	Carbon steel	Zinc chromated

Replacement parts

Part name	MHS4-16D	MHS4-20D	MHS4-25D	MHS4-32D	MHS4-40D	MHS4-50D	MHS4-63D	Principle parts
Seal kit	MHS16-PS	MHS20-PS	MHS25-PS	MHS32-PS	MHS40-PS	MHS50-PS	MHS63-PS	(10) (11) (12) (13)
Finger	P3316004	P3346104	P3316204	P3316304	P3316404	P3316504	P3316604	(4)
Cam	P3316043	P3316143	P3316243	P3316343	P3316443	P3316543	P3316643	(3)
Piston assembly	MHS-A1601	MHS-A2001	MHS-A2501	MHS-A3201	MHS-A4001	MHS-A5001	MHS-A6301	(2) (7) (8)
End plate assembly	MHS-A1613-4	MHS-A2013-4	MHS-A2513-4	MHS-A3213-4	MHS-A4013-4	MHS-A5013-4	MHS-A6313-4	(6) (14)
Cap	MHS-A1614	MHS-A2014	MHS-A2514	MHS-A3214	MHS-A4014	MHS-A5014	MHS-A6314	(5)

*Order 4 pieces per finger unit.

Replacement part / grease pack part number: MH-G01 (30 g)

Outline dimensional drawing

MHS4-16D to 25D

(Unit: mm)

MHS4-16D to 25D external dimensional drawing

MHS4-16D to 25D external dimensional drawing

Auto Switch Mounting Groove (2 Locations)

(Unit: mm)

MHS4-16D

(Unit: mm)

MHS4-20D

(Unit: mm)

MHS4-25D

(Unit: mm)

Model	AA	AB	B	CB	DC	DO	EC	EO	FX	FY	FZ	G	I	J	K	NA	NB	O	P	Q
MHS4-16D	35	32	30	11	33	37	13	17	12.5	11	3	25	4	10	4	8	5h9 (-0.030 to 0)	2	M3 × 0.5	6
MHS4-20D	38	35	36	13	39	43	15	19	14.5	13	3	27	5	12	5	10	6h9 (-0.030 to 0)	2.5	M5 × 0.8	7
MHS4-25D	40	37	42	15	48	54	20	26	17	14.5	5	28	5	14	6	12	6h9 (-0.030 to 0)	3	M5 × 0.8	8

Model	RA	RB	SC	TB	VA	VB	WA	XA	XB
MHS4-16D	18	16	8	5	2H9 (0 to +0.025)	2	17H9 (0 to +0.043)	2H9 (0 to +0.025)	2
MHS4-20D	24	18	9.5	6	2H9 (0 to +0.025)	2	21H9 (0 to +0.052)	2H9 (0 to +0.025)	2
MHS4-25D	26	22	10	6	3H9 (0 to +0.025)	3	26H9 (0 to +0.052)	3H9 (0 to +0.025)	3

MHS4-50D/63D

(Unit: mm)

MHS4-50D/63D external dimensional drawing

MHS4-50D/63D external dimensional drawing

(Unit: mm)

Model	AA	AB	AC	B	CA	CB	DC	DO	EC	EO	FX	FY	FZ	G	I	J	K	L	M	NA	NB
MHS4-50D	55	52	3	70	9	20	74	86	26	38	31	28	6	37.5	9	24	10	4H9 (0 to +0.030)	2	18	10h9 (-0.036 to 0)
MHS4-63D	66	62	4	86	12	22	91	107	35	51	38	34.5	7	44	11	28	11	6H9 (0 to +0.030)	3	24	12h9 (-0.043 to 0)

Model	O	Q	RA	RB	SC	VA	VB	WA	WB	XA	XB	YC
MHS4-50D	5	14	52	34	12	4H9 (0 to +0.030)	4	52H9 (0 to +0.074)	2	4H9 (0 to +0.030)	4	7
MHS4-63D	5.5	17	66	38	14	5H9 (0 to+0.030)	5	65H9 (0 to +0.074)	2.5	5H9 (0 to+0.030)	5	7.5

*For other external dimensional drawings, usage, etc., refer to the manufacturer's catalog.