Nabtesco RV E Series - Page 25

Chapter 4 Preparations for installation
17

O-ring (II)
Prepare an O-ring (II) for sealing the installation section of the reduction gear and motor mounting
flange. The O-rings applicable to the O-ring (II) for the catalog products described in “2.2 Parts codes of
catalog products” are listed in the table below. If an O-ring cannot be used due to the structure, seal the
section using a liquid sealant, etc.
(Reference: “4.2.5 Liquid sealant”)
Table 4-9
(Unit: mm) (Unit: mm)
Model
O-ring
number
O-ring dimensions
Model O-ring number
O-ring dimensions
Inside
diameter
Width Inside
diameter
Width
RV-6E S100
*1
ø99.5 ø2.0 RV-50C AS568-169 ø190.17 ø2.62
RV-20E S120
*1
ø119.5 ø2.0 RV-100C AS568-173 ø215.57 ø2.62
RV-40E AS568-258 ø151.99 ø3.53 RV-200C AS568-277 ø291.69 ø3.53
RV-80E AS568-263 ø183.74 ø3.53 RV-320C AS568-281 ø380.59 ø3.53
RV-110E G190 ø189.3 ø5.7 RV-500C G460 ø459.3 ø5.7
RV-160E G220 ø219.3 ø5.7 RV-60 AS568-165 ø164.77 ø2.62
RV-320E G270 ø269.3 ø5.7 RV-320 AS568-178 ø247.32 ø2.62
RV-450E G300 ø299.3 ø5.7 RV-450 AS568-276 ø278.99 ø3.53
RV-10C AS568-048 ø120.37 ø1.78 RV-550 No.3.5-312
*2
ø312.0 ø3.5
RV-27C AS568-163 ø152.07 ø2.62
*1 Numbers S100 and S120 are the manufacturer’s own standards.
*2 The O-ring of number 3.5-312 is a special type. For purchase of the O-ring, please contact us.
 O-ring (III)
Prepare an O-ring (III) for sealing the installation section of the reduction gear and center tube. The
O-rings applicable to the O-ring (III) for the catalog products described in “2.2 Parts codes of catalog
products” are listed in the table below. If an O-ring cannot be used due to the structure, seal the section
using a liquid sealant, etc.
(Reference: “4.2.5 Liquid sealant”)
O-ring (II)
JIS B 2401: 2012, SAE AS568
O-ring (III) JIS B 2401 : 2012