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
NO.	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	40		40
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
NO.	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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