Hot Runner & Control Systems

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 (240VAC)

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 ⁄ 16 -18 S.H.C.S. are included with 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

.53

1.250

2.216 DIA.

3.990 DIA.

.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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