The specifications of IKO crossed roller way are indicated by the identification number. Identification number consist of a model code, a dimension, a part code, a material code, and classification symbol, and any supplemental codes for each specification to apply.
| 1 | 2 | 3 | 1 | 4 | 5 | 6 | 7 |
| Model | Size | Way length | Model | Number of cylindrical rollers | Material type | Accuracy class | Special specification |
1, Model of IKO crossed roller way
2, Size of CRWG, CRWG...H, CRW series
| Series | Model | Size | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 6 | 9 | 12 | 15 | 18 | 24 | ||
| CRWG | CRWG | - | ο | ο | ο | ο | - | - | - | - | - |
| CRWG...H | CRWG...H | - | ο | ο | ο | - | - | - | - | - | - |
| CRW | CRW | ο | ο | ο | ο | ο | ο | ο | ο | ο | ο |
| CRW...SL | ο | ο | ο | ο | ο | - | - | - | - | - | |
| CRWM | ο | ο | ο | ο | - | - | - | - | - | - | |
3, Way length
ο
The way length is indicated in mm.
οxο
The CRW series can be combined with a way of different length.
Combination of CRW type
This combination consists of two short ways, two long ways, and two roller cages, as a set.
The number of rollers incorporated into a roller cage shall be standard number of short ways (number described in the dimension table) but the number of rollers may be specified.
Example: CRW 6 - 300 x 400
300: Length of short way 300 mm
400: Length of long way 400 mm
Conbination of CRWM type
This combination consists of one center way, two ways, and two roller cages, as a set.
The number of rollers incorporated into a roller cage shall be standard number of short ways (number described in the dimension table) but the number of rollers may be specified.
Example: CRWM 3 - 200 x 150
200: Length of center way 200 mm
150: Length of outside way 150 mm
4, Number of fylindrical rollers
No symbol
Defaut, indicated in the dimension table.
C..
This represents the number of cylindrical rollers.
5, Material type
No symbol
High carbon steel made
SL
Stainless steel made
6, Accuracy class
No symbol
Standard
SP
Super precision
Special specification
/B
Special mounting screw
Preload adjusting-side way can be moved by adjusting the preload. Allowance for movement is required between a way fixing screw and mounting hole, but special mounting screws are provided for the cases where enough allowance is not provided or a fixing screw should be mounted from the way side as shown in picture below.
This special mounting screw can also be used for the case where the mounting hole for mounting the fixed-side way and positioning accuracy of female thread are not enough. This special mounting screw is high carbon steel-made only./M
High rigidity roller cage
The cage is changed into a high rigidity copper alloy-made cage designed to suit vertical axis application. This cage has a structure to prevent a roller from dropping off in one-side direction.
For using a high rigidity roller cage for vertical axis application, it is recommended to use the cage in combination with end stopper SB./SA
End stopper SA
When the stroke frequency is high and cage creep may be caused by the vibration and non-uniformly varying load, the end screw is changed into end stopper SA./SB
End stopper SB
When using a high rigidity roller cage for vertical axis application, the end screw is changed into end stopper SB to regulate the cage stroke at the end./U
Wiper seal
In order to prevent foreign substances from entering into a raceway, the wiper seal is changed into the one with a function of end stopper SB.