Festo DFM-...-YSRW-...-B Guide unit Монтаж Benutzerhandbuch

Seite 2

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Assembly instructions (en)
718 110/ 2009-05d

†‡

Guide unit
DFM-…-YSRW-…-B

Festo AG & Co. KG

Postfach
D-73726 Esslingen
++49/(0)711/347-0
www.festo.com

The guide unit 1 is designed to serve as a stop or stopper cylinder or as a
single-axis feeding unit with larger masses on the yoke plate.

1. Parts list

13225d_22

Guide

unit:

1 DFM-…-YSRW-…-B

13225d_21

4 Centring sleeve (2x2)

Not included in scope of
delivery:
5 Screw

Caution

Sudden uncontrolled movements of the guide unit 1 can cause injury to
people.
• Make sure that
–

mounting is performed in the pressureless state.

–

nobody can place his/her hand in the path of the moving mass, e.g. by

providing a protective guard (

!Section 4.).

–

there are no objects in the positioning range.

2. Mounting, general

Note

To avoid functional faults and increased wear:
• Pay attention to the characteristic curves and permissible limits from our

catalogue (

www.festo.com/catalogue

• Handle the guide unit 1 so that the guide rods and piston rod are not

damaged.

• Make sure that the mounting surface (H) and the surface (I) of the

mounting parts are even.

• Ensure that the guide unit 1 is not deformed during installation.

13225d_11

13225d_19

13225d_24

13225d_25

Mounting variants:

a)

Flat from above

13225d_7

Flat from below

13225d_8

Sideways from below

13225d_9

• Use the following screws 5 and centring sleeves 4, depending on the

mounting variant:

DFM-… a)

Yoke plate (J)

M4 ZBH-9 M5 ZBH-9 M4 ZBH-5 M4 ZBH-5

16 M5

20 M5

ZBH-7

ZBH-9

25 M6

M6 ZBH-12

M8 ZBH-12

ZBH-9

40 M8

50 ZBH-12

ZBH-12

63 M8

M10

80 M10

100

M10 ZBH15 M12 ZBH-15 M12 ZBH-15 M12 ZBH-15

• Check the mounting surface (H) and the surface (I) of the mounting parts

for centring holes for the centring sleeves 4:

ZBH-…

5 7 9 12

@ D1

[mm] 5 7 9 12

min.

[mm] 1.4 1.4 1.9 2.4 2.9

Information

Fitting the guide unit 1:
• Use screws 5 with a screw-in length as close as possible to 1.5 x d

• But fasten your guide unit with at least 2 screws 5, depending on the

load, size and stroke length.

13225d_13

≈ 1.5

Only with the GF variant is it necessary for the surface (I) to be exactly even; otherwise, the

guide rods might jam.

You can find other required dimensions of the guide unit in the catalogue

! www.festo/catalogue.

3. Mounting the proximity sensors

Information

When intermediate strokes are being sensed, in some cases the proximity
sensor can be at the level of a fastening hole (m) and not fastened.
• Note the following mounting alternatives: d) – f):

13225d_17

Move the proximity

sensor 6 around 6 mm
inside an operating path (b).

13225d_18

Turn the proximity sensor 6

180°.

Select another permissible

proximity sensor from our
catalogue
www.festo.com/catalogue.

• Note that every sensor groove is covered with a groove cover ABP 7 and

each cable can be fastened with it (

!Accessories).

4. Stroke setting for guide unit 1

(metallic stop).

13225d_15

13225d_14

Only for DFM-40-B-YSRW:
! Screw (C)

Note

Dimension a must not be increased and dimension l not decreased, or the
shock absorber performance will be considerably reduced.
• Make sure that the shock absorbers (B) are screwed in to dimension a or

dimension l and locked (

!(Table).

• Exhaust the guide unit 1.

Retracted end position

Advanced end position

• Loosen the lock nut (A) or

screw (C).

• Loosen the lock nut (A).

• Adjust the shock absorber (B) to

the desired stroke.

• Maintain dimension a. Shorten

the stroke by max. 10 mm
(

!Table).

• Adjust the shock absorber (B) to

the desired stroke.

• Maintain dimension l. Shorten

the stroke by max. 10 mm
(

!Table).

• Lock the shock absorber (B) with

the lock not (A) or screw (C).

• Maintain the permitted

tightening torque
(

or M

Table).

• Lock the shock absorber (B) with

the lock not (A).

• Maintain the permitted

tightening torque
(

Table).

• Pressurize the guide unit 1.
• Start a test run to check the adjusted stroke.

Dimensions, width across flats and tightening torques M

DFM-B-… 20 25 32 40 50 63

15 17 19 27 27 32

[Nm]

5 8 20 35 35 55

11 13 15 20 20 24

--- --- --- 4 --- ---

[Nm]

--- --- --- 10 --- ---

a [mm]

-10

37.1

-10

48.1

-10

56.5

-10

58.5

-10

l [mm]

4.9

+10

5.2

+10

4.7

+10

3.2

+10

10.4

+10

11.2

+10

5. Care and maintenance

Information

• Take into account the fact that the viscosity of the hydraulic oil

diminishes during operation due to the friction warmth which arises and
the resetting times of the shock absorber become shorter (hard impact).

At temperatures around 0° C:
• Take into account that, at low temperatures, the viscosity of the

hydraulic oil increases and the resetting times of the shock absorber
become longer.

The moving mass should always reach the end position safely, but not
strike hard against it.
The shock absorbers should be replaced when their functioning / shock-
absorbing performance is no longer ensured due to excessive wear.
• Check the cushioning elements regularly for the following signs of wear:
–

Oil leakage

–

Hard impact

–

Stop rod remains in retracted end position / moves slowly from end

position

• Check whether more frequent tests need to be made in case of:
–

High thermal load

–

Excessive accumulation of dirt

–

Proximity of grease-dissolving liquids or vapours.

• Replace the shock absorbers (B) after 10 million strokes

(

!Section 4.).

Tolerance for non-toleranced tightening torques M

> 1 Nm: ± 20%

Protective guard

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