Hot Runner & Control Systems

D-MAX Hot Sprue Bushings High Performance Hot Sprue Bushing 375 Series

66

NOTE: Dimensions shown in inches unless specified otherwise.

For selection of gate diameter it is important to take into consideration the material flow characteristics, share rate of resin, molding conditions, fill time requirements, gate vestige, wall thickness and configuration of parts to be molded. Situations requiring high injection velocities must be considered when selecting small gate diameters. High injection rates may require larger gates due to shear heat build up (e.g. high weight thin wall applications). See material manufacturer’s literature for further information regarding material to be molded. To compensate for nozzle’s growth when heat is applied, the linear expansion of the nozzle (BE) at a given temperature must be added to the nominal “A” dimension. The formula below shows how to figure boring depth (dimension “A” + BE). The tip of the nozzle will now be flush with the cavity line at processing temperature. Formula for determining this expansion factor 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. EXAMPLE: Given a 2.362 inch “A” dimension, with a set point of 500ºF: BE = 2.362 x 0.00000633 x (500 - 68) = 0.0064 Thus “A” + BE will be 2.368 NOTE: The above information is only 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. “O” DIA. “S” DIA. UNFILLED RESIN FILLED RESIN 0.028 Min. 0.062 Min.

Ø4.000 LOCATING RING BORE 1.77 Ø4.000 LOCATING RING BORE 1.77

Ø2.913 HEAD HEATER BORE

Ø2.913 HEAD HEATER BORE

R0.25

R0.38

R0.25

R0.38

3.50

0.71

+ 0.001 0.000

Head Bore Ø2.008

(2) 5/16-18 UNC Tap

+ 0.004 0.000

0.933

3.50

+ 0.001 0.000 NOTE: MATCH MACHINE NOZZLE TIP ORIFICE

0.71

R0.50 R0.75

Head Bore Ø2.008

(2) 5/16-18 UNC Tap

Ø0.47

+ 0.004 0.000

INSULATION SHEET (OPTIONAL)

0.933

3 5 4

NOTE: MATCH MACHINE NOZZLE TIP ORIFICE

R0.50 R0.75

Ø0.47

INSULATION SHEET (OPTIONAL)

3 5 4 1 2

R0.016 MAX

Ø1.437 Min. - Ø1.625 Max.

A + BE

0.5005 0.7505 1.0005

0.31 MIN

5/8-20 UN TORQUE TO 30 FT/LBS

WATER LINES

R0.016 MAX

High Performance Sprue Bushing - 375 Series

Ø1.437 Min. - Ø1.625 Max.

BUSHING AND COMPONENT SPECIFICATIONS

1 2

ASSEMBLY COMPONENTS

A + BE

“A” DIMENSION

ASSEMBLY

BUSHING BODY DETAIL #1

HIGH PERFORMANCE HEATER DETAIL #2 WATTAGE

HEAD HEATER DETAIL #3 WATTAGE

THERMOCOUPLE DETAIL #4

* Locating rings must be ordered separately.

DMAX10060 DMAX10072 DMAX10085 DMAX10097

2.362in (60.00mm) 2.854in (72.50mm) 3.346in (85.00mm) 3.839in (97.50mm)

DEP10060 DEP10072 DEP10085 DEP10097 DEP10110 DEP10135 DEP10160 DEP10185

CIH0088S CIH0089S CIH0090S CIH0091S CIH0092S CIH0093S CIH0094S CIH0095S CUSTOMER RADIUS TO SUIT 30°

400 450 550 700 800 900

0.31 MIN

5/8-20 UN TORQUE TO 30 FT/LBS

WATER LINES

DTC38001 or DTC38002* (High-Heat)

Ø1.437 MIN 80°

Ø1.437 MIN

Ø1.437 MIN

750 Ø1.437 MIN

RDP50021

DMAX10110 4.331in (110.00mm) DMAX10135 5.315in (135.00mm) DMAX10160 6.299in (160.00mm) R0.010-0.015 DMAX10185 7.283in (185.00mm) R0.187 30°

30°

30°

1000 1100

0.0000 +0.0005

25° MAX

Ø S

Ø O Ø0.5000 0.0000 +0.0005

0.0000 +0.0005 * NOTE: FOR HIGH-HEAT APPLICATIONS (>625F) PLEASE CONTACT DME APPLICATION ENGINEERING FOR DESIGN ASSISTANCE- appl_eng@dme.net Ø S

0.0000 +0.0005

Ø S

POINT GATE (BODILESS)

STD. SPRUE AND POINT GATE (FULL BODY)

EXTENDED SPRUE AND EXTENDED POINT GATE (FULL BODY) RUNNER DESIGN

EXTENDED SPRUE AND EXTENDED POINT GATE (FULL BODY) ANGLE DESIGN

Ø1.437 MIN 80°

Ø1.437 MIN

Ø1.437 MIN

Ø1.437 MIN

30°

30°

30°

30°

R0.010-0.015

0.0000 +0.0005

25° MAX

Ø S

CUSTOMER RADIUS TO SUIT

R0.187

Ø O Ø0.5000 0.0000 +0.0005

0.0000 +0.0005

0.0000 +0.0005

Ø S

Ø S

U.S. 800-626-6653 n Canada 800-387-6600 n dme.net n store.dme.net

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