Gate-Mate ® Hot Sprue Bushings Medium Gate-Mate ® Machining Dimensions
75
Machining Dimensions for Bushings BUSHING ASSIMBLY
Improved tip insulation, elimination of material degradation in threaded area of tip, and faster color changes can be achieved through use of a Gate Shell Insulator.
2.187 DIA.
+.002 –.000 2.157 DIA.
.625 WIRE CHANNEL 1.625 DIA.
.563
.219
.125 RAD.
4.000 DIA.
90˚
+.0005 –.0000 .7500 DIA.
+.0005 –.0000
.140
.7500 DIA. .125 RAD.
A + BE SEE NOTE
.80˚ INCL
.375 RAD.
30˚
.875
TO SUIT .044 MIN. (.030 MIN. FOR SUPER SHARP TIP)
.187 SPH. RAD. .005 LAND (MAX.) .030
.31 MIN. DISTANCE BETWEEN WATERLINE AND DROP
NOTE: The expansion factor must be taken into consideration prior to machining for, and installing bushing. This factor (BE) must then be added to the nominal A dimension. Formula for determining this expansion is as follows: BE = “A” dimension x 0.00000633 x nozzle set point - 68ºF (assuming the mold is at 68ºF during operation). If mold temperature is different, substitute 68ºF with actual mold temperature.
ITEM NUMBER REFERENCE
A
BUSHING ASSEMBLY GMB5232 GMB5332
BUSHING SUB-ASSEMBLY
EXAMPLE: Given a 2.375 inch A dimension, with a Bushing Set Point temp. of 500°F: BE = 2.375 × .0000063 × (500 – 68) = .006 thus A + BE will be 2.381.
GMB0020 GMB0030
2.375 3.375
Please note that the above information is given as an example. Variations may occur based on mold configurations and cooling factor. In some instances, it may be necessary to obtain an empirical factor.
Replacement Parts
NOZZLE BODY ONLY
ITEM NUMBER REFERENCE
SQUARE COIL HEATERS (240 VAC)
THERMOCOUPLE (TYPE J, 36" LEADS)
ITEM NUMBER
BUSHING SUB-ASSEMBLY
ITEM NUMBER SCH3142 SCH3242
BUSHING ASSEMBLY GMB5232 GMB5332
WATTS LENGTH
LENGTH
1.35 2.35
GMC-523 GMC-533
GMB0020 GMB0030
315 315
1.70 2.70
TC9600 TC9700
Medium Gate-Mate Locating Ring
1.781
-18 TAPPED THRU
5
16
ITEM NUMBER 6545
2.375
NOTES: 1. Two (2) 5 ⁄
.53
16 -18 S.H.C.S. are included with
1.250
2.216 DIA.
3.990 DIA.
Locating Ring 2. Two (2) Drilled and C’bored holes for 5 ⁄ 16 -18 S.H.C.S. are on a 1.656 circle radius in Locating Ring 3. C’bore depth in Top Clamp Plate and C’bore depth in Locating Ring can be altered to suit application
.218
DRILLED & C'BORED FOR -18 S.H.C.S. 16 5
7
32
U.S. 800-626-6653 n Canada 800-387-6600 n dme.net n store.dme.net
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