# Hot Runner & Control Systems

67

D-MAX Hot Sprue Bushings High Performance Hot Sprue Bushing 625 Series

NOTE: Dimensions shown in inches unless specified otherwise.

For selection of gate diameter it is important to take into consideration the material flow characteristics, shear 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 3.543in “A” dimension, with a set point of 500ºF and mold temperature 68ºF: BE = 3.543 x 0.00000633 x (500 - 68) = .010 Thus “A” + BE will be 3.553 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.

Ø 2.756 0.000 +0.001

Ø 4.000 LOCATING RING BORE

Ø 2.125 HEATER BORE

Ø 8.00 DWL (OPTIONAL FOR ANTI-ROTATION)

BUSHING HEATER CABLE EXIT

0.75

Ø 2.756 0.000 +0.001

Ø 4.000 LOCATING RING BORE

Ø 2.125 HEATER BORE

(4) 5/16-18 UNC

Ø 8.00 DWL (OPTIONAL FOR ANTI-ROTATION)

BUSHING HEATER CABLE EXIT

3.50

1.174 1.378

0.75

Ø 8 X18LG DWL (OPTIONAL FOR ANTI-ROTATION)

1.174

NOTE: MATCH MACHINE NOZZLE TIP ORIFICE

R 0.750

4 5 6

(4) 5/16-18 UNC

INSULATION SHEET (OPTIONAL)

Ø 0.625

3.50

1.174 1.378

Ø 8 X18LG DWL (OPTIONAL FOR ANTI-ROTATION)

NOTE: MATCH MACHINE NOZZLE TIP ORIFICE

2

R 0.750

4 5 6

INSULATION SHEET (OPTIONAL)

Ø 0.625

R0.030

2.125 MIN.

MIN. WIRE CHANNEL

“O” DIA.

“S” DIA.

3

FILLED RESIN

UNFILLED RESIN

A + BE

2

1

0.080 Min.

1.0005

0.100 Min.

R0.030

1"-16 UN TORQUE TO 30 FT/LBS

0.31 MIN.

MIN. WIRE CHANNEL WATER LINES

High Performance Bushing -625 Series

2.125 MIN.

3

BUSHING AND COMPONENT SPECIFICATIONS

A + BE

1

ASSEMBLY COMPONENTS

“A” DIMENSION

ASSEMBLY

BUSHING BODY DETAIL #1

1"-16 UN TORQUE TO 30 FT/LBS BUSHING HEAD DETAIL #2

CAST-IN HEATER

THERMOCOUPLE DETAIL #5

DETAIL #3 WATTAGE

0.31 MIN.

WATER LINES

DMAX16090 3.543in (90.00mm) DMAX16115 4.528in (115.00mm) DMAX16140 5.512in (140.00mm) DMAX16165 6.496in (165.00mm) DMAX16190 7.480in (190.00mm) DMAX16215 8.465in (215.00mm) 625 SERIES POINT GATE (BODILESS) MACHINING DIMENSIONS DMAX16240 9.449in (240.00mm) DMAX16265 10.433in (265.00mm)

DEP16090 DEP16115 DEP16140 DEP16165 DEP16190 DEP16215 DEP16240 DEP16265

CIH0104-S

847

* Locating rings must be ordered separately.

CIH0096-S 1000 CIH0097-S 1030 CIH0098-S 1100 CIH0099-S 1000 CIH0101-S 1200 CIH0102-S 1200 CIH0103-S 1200

DBP16001

RDP38021 500

DTC62501

Ø2.125 MIN 80°

Ø2.125 MIN

Ø2.125 MIN

Ø2.125 MIN

EXTENDED SPRUE RUNNER DESIGN

POINT GATE (BODILESS) 625 SERIES POINT GATE (BODILESS) MACHINING DIMENSIONS

STD. SPRUE AND POINT GATE (FULL BODY)

30°

30°

30°

EXTENDED SPRUE AND ANGLE DESIGN

30°

R0.010-0.015 R0.125

25° MAX.

Ø 2.125 MIN 80°

+.0005 -.0000

+.0005 -.0000

Ø2.125 MIN

Ø2.125 MIN

Ø2.125 MIN

+.0005 -.0000

ØS

ØS

R0.312

ØS

30°

30°

ØO

30°

30°

Ø0.6250 0.0000 +0.0005

R0.010-0.015 R0.125

25° MAX.

+.0005 -.0000

+.0005 -.0000

+.0005 -.0000

ØS

ØS

R0.312

ØS

ØO

Ø 0.6250 0.0000 +0.0005

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

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