Hygienic Cylinder

HYG 20 to 63

Series

Easily wipedImproved waterproofCompletely contained guide rod in body

Features　　　　　　　　　　　　　　　　　　　　　　　　　　●The cylinder’s surface is easily wiped due to the adoption of a new switch design

●Waterproof is greatly improved due to the adoption of a new lubrication mechanism

　　 New type of special bushing (ceramic coated)

　　 New guide rod design (ceramic coated)

　　 New packing (new sectional shape)

　　 New grease approved for food (NSF-H1) is available as an option

●Mounting pitch: SMC’s original dimension to save space

●Selectable piping location from top and side

　 Background of Development and Market

●Target industry: General machinery, Food machinery, and

Packaging machinery

●Target zone: splash area + non food area

(Refer to “The area without food contact” under Definition of Terms)

●Waterproof construction based on the needs of the market

(Instead of being coolant-poof like the existing product)

●The cylinder is easily wiped⇒

The switch is positioned on the surface of the cylinder body

　 Applications　　　　　　　　　　　　　　　　　　　　　　　　●Where the cylinder surface is washed.

●Where water splashes on the sliding part of a cylinder in a normal operating environment and significantly shortens its life. Ex: Fish processing machine (splash area)

　　

●In the packaging industry where fluid from a package splashes on the sliding part of a cylinder, significantly shortening its life. Ex: Bottle filling machine (splash area)

　　

　 Specifications and Performance (Common)

Specifications

　　Bore size 20,25 32,40,50,63

Actuation type Double acting

Min. operating pressure 0.2MPa 0.15MPa

Max. operating pressure 1.0MPa

Proof pressure 1.5MPa

Ambient and fluid temperature 0 to 60 oC

Piston speed 50 to 500 mm/s

Lubrication Not necessary

　 Construction (HY Ｇ ) 　　　　　　　　　　　

Comparison in Performance　　　　●There are no competitors that have an equivalent product.

The waterproof ability is greatly improved by the adoption of a new lubricating construction

Variation (already released)　　　　　　　　　　　　　　　●HYQ (Low profile type)

20 to 63

With rubber cushion

　

●HYC (VDMA conforming type)

32 to 63

With air cushion

　 How to Order (HYG)　　　　　　　　　　　　　　　　

HY D G 32 TN R – 50 F – Auto switch

　　

NIL Rc

(M5X0.8)

TF G

TN NPT

R NBR

H FKM for external

NIL Standard

F For food

Magnet

Bore size

Thread type

Packing material

Stroke

Grease

20 and 25 are available only to M5X0.8.

　 Available Stroke　　　　　　　　　　　　

Bore size Standard stroke

20 20,30,50,100,150,200

25 20,30,50,100,150,200

32 25,50,100,150,200

40 25,50,100,150,200

50 25,50,100,150,200

63 25,50,100,150,200

Other stokes not listed are available by adding a spacer.

　 Outline Dimensions (HYG:f20 to 25) with Magnet

30st or less 31 to 50st 51 to 100st 101st or more C D E NA B A B A B A B

20 78.5 52 88.5 62 108.5 82 128.5 102 36 83 14 12.5

25 86 56.5 96 66.5 116 86.5 136 106.5 42 93 16 13.5

B+ strokeA+ stroke

4.7

E N

D

C

29

25.5

　 Outline Dimensions (HYG:f32 to 63) with Magnet

30st or less 31 to 50st 51 to 100st 101st or more C D E NA B A B A B A B

32 106.5 73 116.5 83 131.5 98 146.5 113 48 112 18 15.5

40 106.5 73 116.5 83 131.5 98 146.5 113 54 120 18 15.5

50 121.5 80 131.5 90 146.5 105 161.5 120 64 148 23 18.5

63 121.5 80 131.5 90 146.5 105 161.5 120 78 162 23 18.5

B+ strokeA+ stroke

4.7

E N

D

C

29

25.5

　 Cautions on Handling (1)　　　　　　　●The guide rod has air purge ports. Locate the piping of the

air purge ports in a place which is not exposed to splashing water

Port

Air purge port

Mounting hole

　 Cautions on Handling (2)　　　　　　　　●Plug the unused ports when mounting

Install plug bolts on unused or unnecessary ports.

Install plug bolts on unused mounting holes on the bottom.

At the time of shipment, three plug bolts are inserted on the side ports. Separately order additional plug bolts if this is not enough.

　 Cautions on Handling (3)　　　　　　　　●Select food approved grease when splashing water will come in contact with the sliding parts of the cylinder.

●Forcefully wiping off of the grease from the sliding parts can shorten the life of the cylinder.

●Intrusion of metal (magnetic material) between the body

of the cylinder and the switch can cause the switch to malfunction.

●Use food approved grease when steam is used for a short duration (a few seconds). Avoid prolong exposure to heat to prevent significantly shortening the life of the cylinder

　 Definitions of Terms　　　　　　　　　 Food zone : British Standard BS EN 1672-2:1997

Food processing machinery- Basic concepts

food area:

The area where the cylinder comes in direct contact with food released to the market. (A hygienic cylinder is not available.)

The area without food contact

Splash area

The area where the cylinder can come in contact with food which is not released to the market.

Nonfood area

The area where the cylinder does not come in contact with food.

A hygienic cylinder is available.

　 Definition of Terms　　　　　　　　　　 a) Food area d) Splash area　　　 c) Nonfood area

　　

Detail of A

A

　 Definition of Terms　　　　　　　　　NSF-H1 grease:

　 A grease for food approved by NSF (National Sanitation

Foundation) which is known internationally as a certified

body.

　 SMC uses NSF-H1 certified grease.

　 (It was conventionally expressed as FDA certified material, but now it is generally called NSF-H1 certified grease.)