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Hydraulic cylinder PTFE wear ring

Hydraulic cylinder PTFE wear ring

Wear rings are used to help keep the piston centered, allowing for even wear and pressure distribution on the seals. Wear rings are used in both piston and rod applications.

  • Brand:

    JST Seals
  • Item NO.:

    WP/WR
  • Payment:

    T/T
  • Product Origin:

    China
  • Shipping Port:

    Guangzhou
  • Order(MOQ):

    50
  • Product Detail

Hydraulic cylinder PTFE wear ring


Wear rings are used to help keep the piston centered, allowing for even wear and pressure distribution on the seals. Wear rings are used in both piston and rod applications, to guide the piston in the cylinder barrel and the piston rod in the cylinder head in the working hydraulic cylinder, bear the increased lateral load, and avoid metal to metal contact between axial moving parts. Nowadays, plastic guide has replaced metal guide for several years, which significantly prolongs the service life of hydraulic cylinder. Although hydraulic oil usually contains pollutants, plastic materials work more smoothly on the sealing surfaces of cylinder barrel and piston rod.

Popular materials include glass filled Nylon, phenolic fabric, bronze filled PTFE and glass filled PTFE.  hydraulic cylinder Wear rings are available in butt cut, angle cut and step cut styles.


PTFE is superior to all other known materials in terms of low friction, anti creep, chemical resistance and heat resistance. In order to obtain the best wear resistance, PTFE is mixed with different fillers, such as bronze or carbon.


PTFE material is only used when the surface pressure is low, or when friction is caused by medium temperature or speed, and no other material is allowed. From the point of view of starting friction, PTFE is better than all other plastic materials.


Sometime, the combination of PTFE wear strip and high load-bearing wear ring may have greater advantages. At this time, the wear strip will collect pollutants to avoid scratches on the sealing surface caused by its contact with the bearing wear ring (made of harder material).


Advantages:

1. High wear resistance
2. Low friction
3. Reduce vibration
4. Compatible with virtually all fluid media
5. Flexible and easy to assemble
6. Low maintenance cost.


Working  Conditions
Working  Temperature
Working  Speed
Material
-100℃ to +200℃
≤5m/s
Phenolic Resin
Phenolic Resin + Fabric


Size:

Diameter: φ10-φ500mm

Dimension can be customized


NO. Nominal size and cavity size of wear ring
d D h t H
WR 18 14 18 8 2 8
19.2 15.2 19.2
20 16 20
22 18 22
24 20 24
25 21 25
26 22 26
28 24 28
30 26 30
31 27 31
31.5 27.5 31.5
33 29 33 10 10
35 31 35
35.4 31.4 35.4
35.5 31.5 35.5
38 34 38
40 36 40
41 37 41 15 15
43 38 43 2.5
44.5 39.5 44.5
45 40 45
50 45 50
51.5 46.5 51.5
55 50 55
56 51 56
60 55 60
61 56 61
63 58 63
65 60 65 20 20
66 61 66
69 64 69
70 65 70
71 66 71
75 70 75
76 71 76
80 75 80
85 79 85 25 3 25
90 84 90
95 89 95
100 94 100
105 99 105
110 104 110
112 106 112 30 30
115 109 115
120 114 120
125 119 125
130 123 130 3.5
132 125 132 35 35
140 133 140
150 143 150
157 150 157 40 40
160 153 160
165 157 165 45 4 45
170 162 170
180 172 180
185 177 185
190 182 190
200 192 200
205 197 205 50 50
210 202 210
220 212 220
224 216 224
225 217 225
230 222 230 55 55
240 232 240
250 242 250
260 252 260 60 60
270 262 270
275 267 275
290 282 290 70 70
297 289 297
300 292 300
312 304 312
332 324 332


Wear Ring (Seals for SPG and SPGW)

NO. Nominal size and cavity size of wear ring
d D h t H
30W 26 30 8 2 8
31.5W 27.5 31.5
32W 28 32
35W 31 35
35.5W 31.5 35.5
40W 36 40
45W 40 45 2.5
50W 45 50
55W 50 55
56W 51 56
60W 55 60
63W 58 63
65W 60 65 10 10
69W 64 69
70W 65 70
71W 66 71
75W 70 75
80W 75 80
85W 79 85 15 3 15
90W 84 90
95W 89 95
100W 94 100
108W 102 108
110W 104 110
112W 106 112
120W 114 120
125W 119 125
130W 123 130 3.5
140W 133 140 20 20
150W 143 150
160W 153 160
170W 162 170 25 4 25
180W 172 180
190W 182 190
200W 192 200
204W 196 204
210W 202 210
224W 216 224
225W 217 225
230W 222 230 30 30
240W 232 240
250W 242 250

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    If you are interested in our products and want to know more details,please leave a message here,we will reply you as soon as we can.

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