Allowable Load NB's GM Slide Bush is classified into either a Single or Double-Wide type in terms of the outer cylinder length. Table 1 below lists comparative allowable loads. A Double-Wide Slide Bush is recommended if the Slide Bush is expected to withstand moment loads.
Table 1: Comparison of allowable loads
GM single type GM double-wide type *SM double-wide type
Note: Single type is assigned a load of 1 for comparison purposes only.
SM-series reference values
Table 2: Recommended F
it for Single and Double-Wide Types
Figure 3: Recommended Flange Installation
GMF-W GMK-W GMT-W
grade High High High
Table 3: Recommended Fit
for Double-Wide Type with Flange Type
shaft clearance fit g6 g6 g6
Figure 4: Recommended Installation method
A flange type Slide Bush is most commonly inserted into a hole with a dimension larger than its outer cylinder. An H7 bore tolerance is recommended for applications that require the steel outer cylinder to be used as the pilot. Additionally, the GM type flange installation should be performed as illustrated in Figure 3. The resin outer cylinder portion must not be used as a pilot.
d2=D-(0.3~1) D:outer diameter of outer cylinder d1=dr-(0.3~1) dr:inner contact diameter
Installation Notes When inserting the GM Slide Bush into a housing, apply an even force to the end of the outer cylinder using a jig such as shown in Figure 4. Handle careful as a precision component; do not subject to strong shocks by dropping or hammering on the resin outer cylinder. When using two or more shafts, it is very important to maintain the parallelism between shafts, as this will greatly affect the smoothness of movement and component life. Adjust the parallelism as needed to achieve smooth movement during the operation of a GM Slide Bush.