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8/17/2019 Merkel Wipers-Wiper PU 6
1/4© 2006 Merkel Freudenberg Fluidtechnic GmbH, © 2006 Freudenberg Simrit GmbH & Co. KG
R o d S e a l s
P i s t o n S e a l s
W i p e r s
G u i d e s
R o t a r y S e a l s
R o t o r S e a l s
S y m m e t r i c S e
a l s
S t a t i c S e a l s
F i t t i n g T o o l s
Merkel Wiper PU 6
Merkel Wiper PU 6
Product advantages
Dirt wiper with bearing
segments on the heel of the
wiper and lightly rounded
wiper lip
no ingress of dirt and water
spray via outer diameter
reliably wipes away dirt
leaves a residual film of oil
on retracting rod
no twisting and pressure
build-up between seal and
wiper
highly wear-resistant.
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■
■
■
■
Product description
Single-acting PUR wiper with
static sealing edge on the outer
diameter.
Application
Earth moving equipment,
presses, mining, injection
moulding machines, support
cylinders.
Material
Material Designation Hardness
Polyurethane 95 AU V149 95 Shore A
Operating conditions
Material 95 AU V149
Temperature range in °C
Hydraulic oils HL, HLP –30 … +110
HFA fluids +5 … +50
HFB fluids +5 … +50
HFC fluids –30 … +40
HFD fluids –
Water +5 … +50
HETG (rapeseed oil) –30 … +60
HEES (synthetic esters) –30 … +80
HEPG (glycol) –30 … +50
Mineral greases –30 … +110
Sliding speed v in m/s 2
Surface quality
Surface
roughnessRa Rmax
Sliding surface * *
Groove base ≤1,6 mm ≤6,3 mm
Groove flanks ≤3 mm ≤15 mm
* The sliding surface must be matched to the sealing element being used
1
Profile d < 70 Profile d >70
8/17/2019 Merkel Wipers-Wiper PU 6
2/4© 2006 Merkel Freudenberg Fluidtechnic GmbH, © 2006 Freudenberg Simrit GmbH & Co. KG
R o d S e a l s
P i s t o n S e a l s
W i p e r s
G u i d e s
R o t a r y S e a l s
R o t o r S e a l s
S y m m e t r i c S e
a l s
S t a t i c S e a l s
F i t t i n g T o o l s
Merkel Wiper PU 6
Design notes
Please observe our general design notes in → Simrit Standard Catalogue, Merkel Hydraulics –
Technical Principles.
Tolerance recommendation
Nominal Ø d D D1
12 … 200 H10 H11
The tolerance for the Ø d is defined by the buffer seal.
Lead-in chamfers
Length and angle are to be designed to suit the rod seal used.
Fitting & installation
Careful fitting is a prerequisite for the correct function of the wiper. Generally, wipers can be quickly
and easily fitted by deforming into a kidney-shape. → Simrit Standard Catalogue, Merkel Hydraulics –
Technical Principles.
2
8/17/2019 Merkel Wipers-Wiper PU 6
3/4© 2006 Merkel Freudenberg Fluidtechnic GmbH, © 2006 Freudenberg Simrit GmbH & Co. KG
R o d S e a l s
P i s t o n S e a l s
W i p e r s
G u i d e s
R o t a r y S e a l s
R o t o r S e a l s
S y m m e t r i c S e
a l s
S t a t i c S e a l s
F i t t i n g T o o l s
Merkel Wiper PU 6
L+0, 2
L >= H1
R 0,41R2
D1
D d∅∅ ∅
<= 70∅ > 70∅
H H
Rounded and free of burrs
d D L H Profile C R2 Article No.
12 18,6 3,8 5,3 15 3,3 1 24375925
14 20,6 3,8 5,3 17 3,3 1 24375926
16 22,6 3,8 5,3 19 3,3 1 24375927
18 24,6 3,8 6,3 21 3,3 1 24375928
20 28,6 5,3 6,5 23 4,3 1 24004784
22 30,6 5,3 6,5 25 4,3 1 24004788
25 33,6 5,3 6,5 28 4,3 1 24004792
28 36,6 5,3 6,5 31 4,3 1 24004798
30 38,6 5,3 6,5 33 4,3 1 24004799
32 40,6 5,3 6,5 35 4,3 1 24004805
35 43,6 5,3 6,5 38 4,3 1 24004808
36 44,6 5,3 6,5 39 4,3 1 24004811
40 48,6 5,3 6,5 43 4,3 1 24004816
42 50,6 5,3 6,5 45 4,3 1 24004820
45 55,6 5,3 6,5 48 5,3 1 24004827
50 60,6 5,3 6,5 53 5,3 1 24004835
55 65,6 5,3 7 58 5,3 1 24004846
56 66,6 5,3 7 59 5,3 1 24004849
60 70,6 5,3 7 63 5,3 1 24004853
63 73,6 5,3 7 66 5,3 1 24004859
65 75,6 5,3 7 68 5,3 1 24004869
70 80,6 5,3 7 73 5,3 1 24004881
75 87,2 7,2 12 81 6,1 1 24004892
80 92,2 7,2 12 86 6,1 1 24004909
85 97,2 7,2 12 91 6,1 1 24004917
90 102,2 7,2 12 96 6,1 1 24004928
100 112,2 7,2 12 106 6,1 1 24004944
110 122,2 7,2 12 116 6,1 1 24004961
115 127,2 7,2 12 121 6,1 1 24004968
120 132,2 7,2 12 126 6,1 1 24004975
125 140 10,2 16 132,6 7,5 1,5 24004981
140 155 10,2 16 147,6 7,5 1,5 24005002
Article list
3
8/17/2019 Merkel Wipers-Wiper PU 6
4/4© 2006 Merkel Freudenberg Fluidtechnic GmbH, © 2006 Freudenberg Simrit GmbH & Co. KG
R o d S e a l s
P i s t o n S e a l s
W i p e r s
G u i d e s
R o t a r y S e a l s
R o t o r S e a l s
S y m m e t r i c S e
a l s
S t a t i c S e a l s
F i t t i n g T o o l s
Merkel Wiper PU 6
L+0, 2
L >= H1
R 0,41R2
D1
D d∅∅ ∅
<= 70∅ > 70∅
H H
Rounded and free of burrs
d D L H Profile C R2 Article No.
150 165 10,2 16 157,6 7,5 1,5 24005013
160 175 10,2 16 167,6 7,5 1,5 24005025
180 200 10,2 18 190 10 3 24005039
190 210 10,2 18 200 10 3 24005044
200 220 10,2 18 210 10 3 24005050
Ordering example
Article No. Type d D H Material
2400505 PU 6 200 220 18 Polyurethane
4