Profiles (Left section)
Service range
| Standard material | |||
| Material codes | Pressure MPa {kgf/㎠} | Max. speed (m/s) |
Temperature
range (℃) |
| Polyamide | 21 {210} | 0.5 | ー25～80 |
Characteristics
WRB-Bearings are plastic bearings functioning as bearings plus back-up rings, for SKY-Packings and the interchangeable products, installable in one piece grooves.
WRB-Bearings prevent metal seizing and eccentric movement of piston and/or rod and greatly improve pressure resistance and durability of sealing systems.
For those applications higher dimensional precision is required, please request us a technical guidance.
WRB-Bearings prevent metal seizing and eccentric movement of piston and/or rod and greatly improve pressure resistance and durability of sealing systems.
For those applications higher dimensional precision is required, please request us a technical guidance.
Remarks
- ●WRB-Bearings should be installed in the direction specified on the above schematic.
- ●Dimension ℓ refers to the groove dimension of packings in the seal systems.
- ※JIS standard sequence of surface roughness symbols refer to HERE.
Dimension table
| Bearings & Groove dimensions （Unit：mm） | Part No. | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| d | D | H | T | t | d1 | d2 | G | A | B | E | C | W | Standard material | ||
| 18 | 26 | 21 | 0.95 | 0 -0.1 |
1 | 20 | 22 | 6.7 | 3 | 6 | ＋0.15 0 |
9 | 11.5 | 27.2 | WRB-18 |
| 20 | 28 | 21 | 0.95 | 1 | 22 | 24 | 6.7 | 3 | 6 | 9 | 11.5 | 27.2 | WRB-20 | ||
| 22.4 | 30 | 21 | 0.95 | 1 | 24.4 | 26.4 | 6.7 | 3 | 6 | 9 | 11.5 | 27.2 | WRB-22.4 | ||
| 25 | 33 | 24 | 0.95 | 1 | 27 | 29 | 6.7 | 3 | 6 | 9 | 14.5 | 30.2 | WRB-25 | ||
| 28 | 35.5 | 26 | 0.95 | 1 | 30 | 32 | 6.7 | 3 | 6 | 9 | 16.5 | 32.2 | WRB-28 | ||
| 30 | 40 | 28.5 | 0.95 | 1.5 | 32 | 34 | 8.5 | 3.5 | 10 | ＋0.2 0 |
13.5 | 14 | 36 | WRB-30 | |
| 35 | 45 | 33.5 | 0.95 | 1.5 | 37 | 39 | 8.5 | 3.5 | 10 | 13.5 | 19 | 41 | WRB-35 | ||
| 35.5 | 45 | 33.5 | 0.95 | 1.5 | 37.5 | 39.5 | 8.5 | 3.5 | 10 | 13.5 | 19 | 41 | WRB-35.5 | ||
| 40 | 50 | 37.5 | 0.95 | 1.5 | 42 | 44 | 8.5 | 3.5 | 10 | 13.5 | 23 | 45 | WRB-40 | ||
| 45 | 56 | 41.5 | 0.95 | 1.5 | 47 | 49 | 9.5 | 3.5 | 10 | 13.5 | 27 | 50 | WRB-45 | ||
| 50 | 60 | 46.5 | 0.95 | 1.5 | 52 | 54 | 8.5 | 3.5 | 10 | 13.5 | 32 | 54 | WRB-50 | ||
| 55 | 65 | 51.5 | 0.95 | 1.5 | 57 | 59 | 8.5 | 3.5 | 10 | 13.5 | 37 | 59 | WRB-55 | ||
| 56 | 66 | 51.5 | 0.95 | 1.5 | 58 | 60 | 8.5 | 3.5 | 10 | 13.5 | 37 | 59 | WRB-56 | ||
| 60 | 71 | 55 | 0.95 | 2 | 62 | 64 | 10 | 3.5 | 10 | 13.5 | 40 | 63.5 | WRB-60 | ||
| 63 | 73 | 57 | 0.95 | 2 | 65 | 67 | 9 | 3.5 | 10 | 13.5 | 42 | 64.5 | WRB-63 | ||
| 71 | 80 | 62 | 0.95 | 2 | 73 | 75 | 9 | 3.5 | 10 | 13.5 | 47 | 69.5 | WRB-71 | ||
| 80 | 90 | 67 | 0.95 | 2 | 82 | 84 | 9 | 3.5 | 10 | 13.5 | 52 | 74.5 | WRB-80 | ||
| 90 | 105 | 72 | 0.95 | 2 | 92 | 94 | 12 | 4 | 10 | 14 | 57 | 83 | WRB-90 | ||
| 100 | 115 | 77 | 0.95 | 2 | 102 | 104 | 12 | 4 | 10 | 14 | 62 | 88 | WRB-100 | ||
- ★Orders and inquiries are acceptable by part numbers. Part numbers marked ※ have been changed each part numbers. Please check HERE for the previous part number.
- ★Part numbers in blue letters are the products in stock.
- ★S-LEEVE with the part numbers in light Italic require the confirmation of their availability prior to ordering. These items are subject to the abolishment without notice. Reclamation of an abolished product requires producing the new tooling at your expense.
- ★S-LEEVE products are adequately packaged for the optimum storage. Refer to Cautions for the handling and storage.
- ★Performance and material tests on packing and seals are also available. Please contact us for more information.
| Profiles (Left section) | Standard Material | Part Name | Application | Field of application |
|---|---|---|---|---|
 |
NBR(RN922) | RNY-Packings | （Rod packings） | |
 |
NBR(RN906) | SKY-Packings | （Piston＆rod packings） |
Technical information
TECHNICAL INFORMATION