K849

 Material

Material

Polyurethane HPU82 shore

Polyurethane HPU95A

Introduction

K849 is a non standard dust wiper. It is used for rod seals. K849 is simple dust seal with sealing system. It is including 2 lips in order to exclude dust and moisture from entering into cylinder and collect passing fluid from rod seal.

K849 is a single acting wiper manufactured from tough, wear resistant polyurethane (HPU). Its robust outer wiper lip excludes contaminants from the hydraulic system, and the internal wiper lip collects fluids that bypass the primary rod seal, to give dry rod performance.

 The K849 profile can be used as a heavy to light duty wiper. When used in high pressure applications in conjunction with the proper KOLBEN rod seals, the K849 compliments the sealing system by providing an additional beveled sealing lip, yielding excellent film-breaking and the driest rod sealing available. These dual acting features also enable it to be used by itself in low pressure applications as both the rod seal and the wiper. Knife-trimmed sealing lips ensure the best possible film breaking.

The wiper is precision moulded in high performance polyurethane – HPU  for maximum wear resistance, and is designed to exclude dirt and moisture from entering the cylinder and to collect traces of fluid passing the rod seal.

 

Material

Power-transmission fluid

Temperature C

Speed

Pressure

Max. Gap F

Polyurethane

HPU95

Or HPU82

Mineral Oil

 -45  -  +110

≤  1,0m/s

 

F  ≤   0,6 mm

HFC Water Glycol

-30  -  +60

 

 

F  ≤   0,5 mm

HFA 5/95 Water base fluid, Water

+5  -  +60

 

 

F  ≤   0,4 mm

 

 

 

                                                                                         

 

Chamfers & Rad (mm)

 

Tolerance

Surface Finishing

S  ≤

4

5

7.5

10

12.5

15

20

 

Rod

Piston

µm Ra (for rod only) µm Rt

C  ≥

3

3.5

5

6.5

7

8

10

ø d

f9

js11

0,1-0,4

≤   4

r1  ≤

0.2

0.4

0.8

0.8

1.2

1.6

1.6

ø D

Js11

H9

≤  1,6

≤  10

r2  ≤

0.4

0.8

1.2

1.2

1.6

2.4

2.4

L

+0,25  0

+0,25   0

≤  3,2

≤  16

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

d

D1

L1

L2

D2

18

24

5

7

21

20

28

5

8

25.5

22

30

5

8

27.5

25

33

5

8

30.5

28

36

5

8

33.5

30

38

5

8

35.5

30

41.2

7.5

10

37

32

40

5

8

37.5

35

43

5

8

40.5

36

44

5

8

41.5

40

48

5

8

45.5

40

50.6

5.3

7

43

41.28

49.28

5

8

46.8

45

53

5

8

50.5

45

55.6

5.3

7

48

50

58

5

8

55.5

50

58.6

5.3

7

53

50

60.6

5.3

7

53

55

65.6

5.3

7

58

56

66

6.3

10

63

56

66.6

5.3

7

59

60

70

5.3

7

66

60

70

6.3

10

67

60

70.6

5.3

7

63

63

73

6.3

10

70

63

73.6

5.3

7

66

65

75

6.3

10

72

65

75.6

5.3

7

68

70

80

6.3

10

77

70

80.6

5.3

7

73

70

82.2

7.2

12

76

75

83.6

5.3

7

78

75

85

6.3

10

82

75

87.2

7.2

12

81

80

90

6.3

10

87

80

91

7.5

11

85

80

92.2

7.2

12

86

82.6

92.2

5.3

7.1

85.7

85

93.6

5.3

7

88

85

97.2

7.2

12

91

85

98

7.5

11.5

92

88

100.2

7.2

12

94

90

100

6.3

10

97

90

102.2

7.2

12

96

95

107.2

7.2

12

101

100

110.6

5.3

7

104

100

112.2

7.2

12

106

100

115

9.5

14

110

101.6

116.6

9.5

14

111.6

105

113

5

8

110.5

105

120

7.2

12

112

110

122.2

7.2

12

116

110

125

9.5

14

120

115

127.2

7.2

12

121

120

132.2

7.2

12

126

120

135

9.5

14

130

125

133

5.3

7

130.8

125

137.2

7.7

12

131

125

140

9.5

14

135

125

140

10.2

16

132.6

128

143

9.5

14

138

130

142.2

7.2

12

136

130

145

10.2

16

137.6

132

144.2

7.2

12

138

135

150

9.5

14

145

140

148.6

5.3

7

143

140

152.2

7.7

12

146

140

155

9.5

14

150

140

155

10.2

16

147.6

145

153.6

5.3

7

148

145

160

9.5

14

155

150

162.2

7.7

12

156

150

165

7.2

12

158

150

165

10.2

16

157.6

150

166

8

12

161

155

163

5

8

160.5

155

167.2

7.7

12

161

155

175

10.2

18

165

160

172.2

7.7

12

166

160

175

9.5

14

170

160

175

10.2

16

167.6

165

180

9.5

14

175

170

180.6

5.3

7

174

170

182.2

7.7

12

176

170

185

9.5

14

180

177

192

9.5

14

187

180

195

9.5

14

190

180

200

10.2

18

190

185

200

10.2

16

192.6

185

205

10.2

18

195

190

198.6

5.3

7

193

190

205

9.5

14

200

190

210

10.2

18

200

195

210

10.2

16

202.5

200

208.6

5.3

7

203

200

215

9.5

14

210

200

220

10.2

18

210

205

213.6

5.3

7

208

205

220

9.5

14

215

210

225

9.5

14

220

210

226

9

12

221

210

230

10.2

18

220

212

232

12.5

18

225.5

220

235

10.2

16

227.6

220

240

10.2

18

230

220

240

12.5

18

233.5

225

240

9.5

14

235

225

245

10.2

18

235

230

238.6

5.3

7

233

230

245

9.5

14

240

230

246

7.5

12

240.7

230

250

10.2

18

240

235

255

10.2

18

245

240

255

9.5

14

250

240

260

10.2

18

250

240

260

12.5

18

253.5

245

265

12.5

18

258.5

250

270

10.2

18

260

250

270

12.5

18

263.5

255

270

9.5

14

265

260

275

9.5

14

270

260

280

10.2

18

270

265

280

10.2

16

272.6

265

285

10.2

15

275

270

278.6

5.3

7

273

270

286

7.5

12

280.7

275

295

10.2

18

285

280

295

9.5

14

290

280

300

10.2

15

290

285

300

9.5

14

295

285

305

12.5

18

298.5

288

308

10.2

15

301.5

290

310

12.5

18

303.5

295

315

12.5

18

308.5

300

316

7.5

12

310.7

300

320

12.5

18

313.5

305

325

12.5

18

318.5

320

340

10.2

18

330

325

345

10.2

18

335

330

346

7.5

12

340.7

335

355

10.2

18

345