Passing Air Hoses And Cables Through The Shaft (Rh-3Frh/6Frh/12Frh/20Frh Series); Specifications Of Internal Air Hoses And Cables; Customer Prepared Products - Mitsubishi Electric RH-FRH Series Instruction Manual

2Unpacking to Installation

2.2.8 Passing air hoses and cables through the shaft (RH-3FRH/6FRH/12FRH/20FRH series)

For this robot, customer prepared air hoses and cables can be pulled out from the No. 2 arm by passing through
the shaft. For how to pass air hoses and cables through the shaft, refer to the following.

(1) Specifications of internal air hoses and cables

Use the air hoses and the cables, which have flexibility, capability of being repeatedly bent and twisted, and high
wear resistance, for the internal use.
Select the air hose and the cable according to the specifications shown in
Table 2-7 ： Specifications of internal air hoses and cables
Model
RH-3FRH
RH-6FRH
RH-12FRH
RH-20FRH

(2) Customer prepared products

Table 2-8 shows the necessary products for passing air hoses and cables through the shaft. The user needs to
prepare the products.
Table 2-8 ： Customer prepared products
Name
Expanding sleeve
Cushion rubber
Cable tie
Silicon grease
Liquid gasket
【Precautions for implementation of moving part】
1) The internal air hoses and cables are bent
and twisted according to the operations of
the J3 and J4 axes. Structurally, the
twisting occurs inside the shaft, and the
bending occurs inside the expanding sleeve.
Without the expanding sleeve, the twisted
air hoses and cables may run onto the guide
portion of the fixing plate, and the air hoses
may be bent or broken.
2) Do not place the connector connecting part
and the air hose relay part in the binding or
twisting range.
Installation
2-29
Shaft inside Space factor
diameter (recommended)
φ11mm 50% or less
φ18mm 50% or less
φ18mm 50% or less
φ21mm 50% or less
Qty.
Moderate Protecting the air hoses and cables, and improving the twisting rigidity
quantity Recommended expanding sleeve: EXP-13-PT (manufactured by Kitagawa Industries Co.,
Ltd.)
Moderate Protecting the bent portion and the fixed portion of the twisted end.
quantity Recommended cushion rubber: silicon rubber, thickness of 1mm, dimensions of 30mm ×
80mm
Moderate Fixing the air hoses and the cables
quantity
Moderate Reducing friction and wear when the air hoses and the cables slide
amount Recommended silicon grease: G-501 (manufactured by Shin-Etsu Chemical Co., Ltd.)
Moderate Sealing the outlet at the tip of the shaft (for the oil-mist and clean specification models
amount only)
Recommended liquid gasket: 1212 (manufactured by Three Bond Co., Ltd.)
Highest speed of
J3 axis
1,100mm/sec
2,400mm/sec
2,800mm/sec
2,400mm/sec
Usage and recommended product
Bending range
Twisting
range
Table 2-7.
Minimum R of Operating angle of
bending J4 axis
20mm ±360deg
25mm ±360deg
25mm ±360deg
25mm ±360deg
Expanding sleeve
Plate for fixation