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Parallel Opening And Closing Gripper MHF2

MHF2 Parallel Opening And Closing Gripper has low profile design that reduces moment generation. Short, middle, and long strokes are available. Compact, but the double piston mechanism provides it with a strong gripping force.Reduced height of approx. 1/3 of that of the standard gripper.

Bore: 8, 12, 16, 20mm
Motion Pattern: Double-acting
Working Medium: Air
Lubrication: Non-lube
Ambient and fluid temperature: -10~+60°C

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  • Product Specifications
  • Product Details
  • Size Weight
  • Related Data
  • Product Video

Model and Meaning

Applicable Auto Switches

Type Special functions Electrical entry Indicator light Wiring
(Output)		 Load voltage Auto switch model Lead wire length (m)* Pre-wired
connector		 Applicable load
DC AC Perpendicular In-line 0.5
(Nil)		 1
(M)		 3
(L)		 5
(Z)
Solid state auto switch -- Grommet Yes 3-wire (NPN) 24V 5V,12V -- M9NV M9N ● ● ● ○ ○ IC circuit Relay, PLC
3-wire (PNP) M9PV M9P ● ● ● ○ ○
2-wire 12V M9BV M9B ● ● ● ○ ○ -
Diagnostic indication
(2-color indicator)		 3-wire (NPN) 5V,12V M9NWV M9NW ● ● ● ○ ○ IC circuit
3-wire (PNP) M9PWV M9PW ● ● ● ○ ○
2-wire 12V M9BWV M9BW ● ● ● ○ ○ -
Water resistant
(2-color indicator) 		3-wire (NPN) 5V,12V **M9NAV **M9NA ○ ○ ● ○ ○ IC circuit
3-wire (PNP) **M9PAV **M9PA ○ ○ ● ○ ○
2-wire 12V **M9BAV **M9BA ○ ○ ● ○ ○ -
** Water resistant type auto switches can be mounted on the above models, but in such case SMC cannot guarantee water resistance.
* Lead wire length symbols: 0.5m……………Nil (Example) M9NW
1m…………… M (Example) M9NWM
3m…………… L (Example) M9NWL
5m…………… Z (Example) M9NWZ
* Auto switches marked with "○" are made to order specification.
Note) When using the 2-color indicator type, please make the setting so that the indicator is lit in red to ensure the detection at the proper position of the air gripper.

Specifications

Fluid Air
Operating pressure ø8 : 0.15~0.7MPa
ø12~20 : 0.1~0.7MPa
Ambient and fluid temperature -10~60℃ (with no condensation)
Repeatability Note 1) ±0.05mm
Maximum operating frequency Short stroke 120c.p.m.
Medium stroke 120c.p.m.
Long stroke 60c.p.m.
Lubrication Not required
Action Double acting
Auto switch (Option) Solid state auto switch (3-wire, 2-wire)
Note 1) This is the value when no offset load is applied to the finger.
When an offset load is applied to the finger, the maximum value is ±0.15 mm due to the influence of backlash of the rack and pinion.

Model

Action Model Bore (mm) Gripping force (Note 1) Opening/closing stroke (both sides) mm Weight (g) (Note 2) Unobstructed capacity (cm³)
Effective gripping force per finger N Finger open side Finger close side
Double acting MHF2-8D 8 19 8 65 0.7 0.6
MHF2-8D1 16 85 1.1 1.0
MHF2-8D2 32 120 2.0 0.9
MHF2-12D 12 48 12 155 1.9 1.6
MHF2-12D1 24 190 3.3 3.0
MHF2-12D2 48 275 6.1 5.8
MHF2-16D 16 90 16 350 4.9 4.1
MHF2-16D1 32 445 8.2 7.4
MHF2-16D2 64 650 14.9 14.0
MHF2-20D 20 141 20 645 8.7 7.3
MHF2-20D1 40 850 15.1 13.7
MHF2-20D2 80 1225 28.0 26.6
Note 1) At the pressure of 0.5 MPa, when gripping point L is 20 mm.
Note 2) Excluding the auto switch weight.

Symbol

Made to Orde

Symbol Specifications/Description
-X4 Heat resistance (100℃)
-X5 Fluororubber seal
-X50 Without magnet
-X53 EPDM seal/Fluorine grease
-X63 Fluorine grease
-X79 Grease for food processing machines, Fluorine grease
-X79A Grease for food processing machines
-X81A Anti-corrosive treatment of finger
-X81B Anti-corrosive treatment of finger, guide and joint
-X83 With an adjustable opening/closing finger positioning

Structure Drawing

Component Parts

No. Description Material Note No. Description Material Note
1 Body Aluminum alloy Hard anodized 11 Head damper Urethane rubber
2 Piston Stainless steel
12 Clip Stainless steel wire
3 Joint Stainless steel Heat treatment 13 Rack Stainless steel Nitriding
4 Guide rail Stainless steel Heat treatment 14 Magnet - Nickel plated
5 Finger Stainless steel Heat treatment 15 Steel balls High carbon chromium bearing steel
6 Roller stopper Stainless steel
16 Wear ring Synthetic resin
7 Pinion Carbon steel Nitriding 17 Roller High carbon chromium bearing steel
8 Cap A Aluminum alloy Clear anodized 18 Needle roller High carbon chromium bearing steel
9 Cap B Aluminum alloy Clear anodized 19 Parallel pin Stainless steel
10 Cap C Aluminum alloy Clear anodized 20 Piston seal NBR




21 Gasket NBR

Replacement Parts

Description Kit Model Contents
MHF2-8D MHF2-8D1 MHF2-8D2
Seal kit MHF8-PS MHF8-PS-1 MHF8-PS-2 12, 20, 21
Finger assembly MHF-A0802 MHF-A0802-1 MHF-A0802-2 3,4,5,6,15,17,19 Mounting screw
Replacement part/Grease pack part model:
Guide unit: GR-S-010 (10g)
Cylinder unit: GR-L-005 (5g)

Bolts for Body Through-hole Mounting

Part Model Number of pieces
MHF-B08 MHF2-8D 2 pieces/unit
MHF2-8D1 2 pieces/unit
MHF2-8D2 4 pieces/unit
* The bolts for body through-hole mounting are attached to the product. They are also provided at an order of 1 piece or more with the above part numbers.

Component Parts

No. Description Material Note No. Description Material Note
1 Body Aluminum alloy Hard anodized 13 Magnet − Nickel plated
2 Piston Stainless steel
14 Steel balls High carbon chromium bearing steel
3 Joint Stainless steel Heat treatment 15 Wear ring Synthetic resin
4 Guide rail Stainless steel Heat treatment 16 ø12 : Roller High carbon chromium bearing steel
5 Finger Stainless steel Heat treatment ø16~20 : Parallel pin Stainless steel
6 Roller stopper Stainless steel
17 Needle roller High carbon chromium bearing steel
7 Pinion Carbon steel Nitriding 18 ø12 : R shape retaining ring Carbon steel Phosphate coated
8 Cap A Aluminum alloy Clear anodized ø16~20 : Type C retaining ring
9 Cap B Aluminum alloy Clear anodized 19 Parallel pin Stainless steel
10 Cap C Aluminum alloy Clear anodized 20 Piston seal NBR
11 Head damper Urethane rubber
21 Gasket NBR
12 Rack Stainless steel Nitriding 22 Gasket NBR

Replacement Parts

Description Kit Model Contents
MHF2-12D MHF2-12D1 MHF2-12D2 MHF2-16D MHF2-16D1 MHF2-16D2 MHF2-20D MHF2-20D1 MHF2-20D2
Seal kit MHF12-PS MHF12-PS-1 MHF12-PS-2 MHF16-PS MHF16-PS-1 MHF16-PS-2 MHF20-PS MHF20-PS-1 MHF20-PS-2 12, 20, 21
Finger assembly MHF-A1202 MHF-A1202-1 MHF-A1202-2 MHF-A1602 MHF-A1602-1 MHF-A1602-2 MHF-A2002 MHF-A2002-1 MHF-A2002-2 3,4,5,6,15,17,19 Mounting screw

Bolts for Body Through-hole Mounting

Part Model Number of pieces
MHF-B12 MHF2-12D 2 pieces/unit
MHF2-12D1 2 pieces/unit
MHF2-12D2 4 pieces/unit
* The bolts for body through-hole mounting are attached to the product. They are also provided at an order of 1 piece or more with the above part numbers.
* When mounting MHF2-16D or MHF2-20Dwith the body through-holes, use hexagon socket head screws available on the market.

Replacement part/Grease pack part model:

MHF2-□□D, D1(ø12,16,20)
MHF2-□□D2(ø12)		 GR-S-010(10g) (Guide unit)
GR-L-005(5g) (Cylinder unit)
MHF2-□□D2(ø16,20) GR-S-010(10g) (Guide unit)
GR-L-010(10g) (Cylinder unit)

Dimensions

MHF2-8D

MHF2-8D1

MHF2-8D2

MHF2-12D

MHF2-12D1

MHF2-12D2

MHF2-16D

MHF2-16D1

MHF2-16D2

MHF2-20D

MHF2-20D1

MHF2-20D2

Body Option: Side Piping Type

Body Option Dimension (mm)

Model A B C D
MHF2-8DR 5.5 25 11 M3×0.5
MHF2-8D1R 37

Body Option Dimension (mm)

Model A B C D
MHF2-8D2R 5.5 61 11 M3×0.5
MHF2-12DR 7 38 14.8 M5×0.8
MHF2-12D1R 54
MHF2-12D2R 90
MHF2-16DR 9 54 19 M5×0.8
MHF2-16D1R 76
MHF2-16D2R 124
MHF2-20DR 10 66 23 M5×0.8
MHF2-20D1R 94
MHF2-20D2R 154
* For dimensions not given above, please contact us.

Auto Switch Installation Examples and Mounting Positions

Various auto switch applications are possible through different combinations of auto switch quantities and detecting positions.

1) Detection when Gripping Exterior of Workpiece

Detection example 1. Confirmation of fingers in reset position 2. Confirmation of workpiece held 3. Confirmation of workpiece released
Position to be detected
Operation of auto switch Auto switch turned on when fingers return. (Light ON) Auto switch turned on when gripping a workpiece. (Light ON) When a workpiece is not held (Abnormal operation): Auto switch to turn ON. (Light ON)
Detection Combinations One auto switch
*One position, any of 1, 2 and 3 can be detected.		 ● ● ●
Two auto switches
*Two positions, any of 1, 2 and 3 can be detected.		 Pattern A ● ● -
B - ● ●
C ● - ●
How to determine auto switch installation position


At no pressure or low pressure, connect the auto switch to a power supply, and follow the directions.
Note 1) It is recommended that gripping of a workpiece be performed close to the center of the finger stroke.
Note 2) When holding a workpiece close at the end of open/close stroke of fingers, detecting performance of the combinations listed in the above table may be limited, depending on the hysteresis of an auto switch, etc.

2) Detection when Gripping Interior of Workpiece

Detection example 1. Confirmation of fingers in reset position 2. Confirmation of workpiece held 3. Confirmation of workpiece released
Position to be detected
Operation of auto switch Auto switch turned on when fingers return. (Light ON) Auto switch turned on when gripping a workpiece. (Light ON) When a workpiece is not held (Abnormal operation): Auto switch to turn ON. (Light ON)
Detection Combinations One auto switch
*One position, any of 1, 2 and 3 can be detected.		 ● ● ●
Two auto switches
*Two positions, any of 1, 2 and 3 can be detected.		 Pattern A ● ● -
B - ● ●
C ● - ●
How to determine auto switch installation position


At no pressure or low pressure, connect the auto switch to a power supply, and follow the directions.
Note 1) It is recommended that gripping of a workpiece be performed close to the center of the finger stroke.
Note 2) When holding a workpiece close at the end of open/close stroke of fingers, detecting performance of the combinations listed in the above table may be limited, depending on the hysteresis of an auto switch, etc.

Auto Switch Hysteresis

Auto switches have hysteresis similar to micro switches. Use the table below as a guide when adjusting aut switch positions.

Hysteresis


 D-M9□(V)
D-M9□W(V)
D-M9□A(V)
MHF2-8D□ 0.2
MHF2-12D□ 0.3
MHF2-16D□ 0.2
MHF2-20D□ 0.5

Auto Switch Mounting

Insert the auto switch into the auto switch mounting groove in the air chuck in th direction shown below, and after setting the mounting position, tighten the attached switch mounting screw with a flat head watchmaker's screwdriver.

Note) Use a watchmaker's screwdriver with a grip diameter of 5 to 6 mm to tighten the auto switch mounting screw. The tightening torque should be about 0.05 to 0.15 N·m.

Protrusion of Auto Switch from Edge of Body

• The amount of auto switch protrusion from the body end surface is shown in the table below.
• Use this as a standard when mounting, etc.

Protrusion of Auto switch

Lead wire type In-line entry Perpendicular entry
Illustration
Model Auto switch /
Finger position		 D-M9□
D-M9□W		 D-M9□A D-M9□V
D-M9□WV		 D-M9AV
MHF2-8D Open 6.5 8.5 4.5 6.5
Close 6.5 8.5 4.5 6.5
MHF2-8D1 Open 6.5 8.5 4.5 6.5
Close 6.5 8.5 4.5 6.5
MHF2-8D2 Open 0.5 2.5 ―― ――
Close 0.5 2.5 ―― ――
MHF2-12D Open 3 5 1 3
Close 3 5 1 3
MHF2-12D1 Open 1 3 ―― ――
Close 1 3 ―― ――
MHF2-12D2 Open ―― ―― ―― ――
Close ―― ―― ―― ――
MHF2-16D Open ―― ―― ―― ――
Close ―― ―― ―― ――
MHF2-16D1 Open ―― ―― ―― ――
Close ―― ―― ―― ――
MHF2-16D2 Open ―― ―― ―― ――
Close ―― ―― ―― ――
MHF2-20D Open ―― ―― ―― ――
Close ―― ―― ―― ――
MHF2-20D1 Open ―― ―― ―― ――
Close ―― ―― ―― ――
MHF2-20D2 Open ―― ―― ―― ――
Close ―― ―― ―― ――
Note) There is no protrusion for sections of the table with no values entered.

Caution

When using an auto switch on the mounting plate side, the switch will protrude from the end face as shown in the right figure. Please provide a run off space of 2 mm or more on the mounting plate.