Instruction Manual

1
MODEL ARCJ - NEMA “C” FACE-MOUNTED MOTOR ADAPTER KITS
FOR CONVENIENT ADAPTATION OF SENSORS & SENSING GEARS
TO GEAR CASE OR FOOT-MOUNTED NEMA “C” FACE MOTORS
4.37
5.07
6.00
.70
3.50
4.500
-.003
+.000
4.501
-.000
+.003
.175 ±.010
.140 ±.010
.750 ±.005
1.75
90°
45°
6.63
5.875 B.C.
SCREWS 2 TYP.
(SUPPLIED)
COVER
(SUPPLIED)
GASKET
(SUPPLIED)
PLUG (SUPPLIED)
CONDUIT
FITTING
(NOT SUPPLIED)
SET SCREW
LOCKS SENSOR
(SUPPLIED)
AIR GAP
FACTORY SET
(SEE TEXT)
(89)
(17.8)
(152.4)
(128)
(111)
(44.5)
(149.23)
(168.4)
(114.30)
(+.00)
(-.08)
(+.08)
(-.00)
(114.33)
(4.44 ±.13)
(19.05) ±.13)
(3.43 ±.25)
C
L
(Ø 10.4)
L
C
SENSING
GEAR
(SUPPLIED)
4 HOLES
RIGID OR
FLEXIBLE CONDUIT
(NOT SUPPLIED)
3.97
(100.8)
Ø .41
5.50
6.20
7.00
9.10
7.250 B.C.
90°
45°
.280±.010
.810±.010
8.501
-.000
+.003
8.500
-.003
+.000
.210±.010
(177.8)
(157.5)
(139.7)
(184.15)
(231.1)
(5.33±.25)
(20.57±.25)
(7.11±.25)
(215.90)
(+.00)
(-.08)
(215.93)
(+.08)
(-.00)
Ø .56
(Ø 14.2)
4 HOLES
DESCRIPTION
ARCJ Ring Adapters can be quickly and easily installed on foot-mounted
motors with NEMA type “C” face mount end bells, or between motor and
gear case flange.
The ARCJ ring, with integral junction box, is cast aluminum with precision
machined mounting surfaces. Kits are supplied complete with a 60-tooth
sensing gear, factory installed magnetic pickup or HESS sensor, and mounting
hardware. The maximum recommended gear speed for all kits is 5,000 RPM.
Two ARCJ ring sizes and five gear bores cover the range of motor frame sizes
as listed in the Ordering Information.
Wiring connections to the sensor are made by removing the gasketed
junction box cover. Two threaded female (½" NPT) conduit connections are
provided for right or left conduit entry (as shown in the Dimension drawing).
A threaded plug is supplied with each kit for sealing the un-used conduit entry.
The 60-tooth steel sensing gear (kit supplied) results in direct RPM
indication when used with a 1 second time-base rate indicator (tachometer).
Red Lion Controls rate indicators can be configured to provide a complete
speed sensing and indication system. The following two sensor options (next
page) are available with the ARCJ kits in order to meet a wide variety of
applications.
DIMENSIONS FOR MODEL ARCJ-1 In Inches (mm)
DIMENSIONS FOR MODEL ARCJ-2 In Inches (mm)
See ARCJ-1 for
junction box details.
Bulletin No. ARCJ-K
Drawing No. LP0139
Released 04/13
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