Page 69 - Hot Runner & Control Systems 2020

D-MAX Hot Sprue Bushings 67

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
+0.001
Ø4.000 LOCATING RING BORE Ø2.756 0.000 HEAD BORE consideration the material flow characteristics, shear
rate of resin, molding conditions, fill time requirements,
Ø2.125 HEATER BORE gate vestige, wall thickness and configuration of parts to
be molded. Situations requiring high injection velocities
must be considered when selecting small gate diameters.
Ø8.00 DWL
BUSHING HEATER (OPTIONAL FOR High injection rates may require larger gates due to shear
CABLE EXIT ANTI-ROTATION) heat build up (e.g. high weight thin wall applications). See
0.75 material manufacturer’s literature for further information
+0.001 regarding material to be molded.
Ø4.000 LOCATING RING BORE Ø2.756 0.000 HEAD BORE
1.174
To compensate for nozzle’s growth when heat is applied, the
linear expansion of the nozzle (BE) at a given temperature
Ø2.125 HEATER BORE must be added to the nominal “A” dimension. The formula
(4) 5/16-18 UNC
Ø8.00 DWL below shows how to figure boring depth (dimension “A” +
BUSHING HEATER (OPTIONAL FOR BE). The tip of the nozzle will now be flush with the cavity
CABLE EXIT 3.50 1.174 ANTI-ROTATION) line at processing temperature.
1.378
0.75
Formula for determining this expansion factor is as follows:
1.174 Ø8 X18LG DWL BE = “A” dimension x 0.00000633 x nozzle set point - 68ºF
(OPTIONAL FOR (assuming the mold is at 68ºF during operation). If mold
NOTE: MATCH MACHINE ANTI-ROTATION)
NOZZLE TIP ORIFICE R 0.750 temperature is different, substitute 68ºF with actual mold
6
(4) 5/16-18 UNC temperature.
INSULATION SHEET
4 Ø0.625 (OPTIONAL)
5 3.50 1.174 EXAMPLE: Given a 3.543in “A” dimension, with a set point of
500ºF and mold temperature 68ºF:
1.378
1.743 BE = 3.543 x 0.00000633 x (500 - 68) = .010
Ø8 X18LG DWL Thus “A” + BE will be 3.553
(OPTIONAL FOR
NOTE: MATCH MACHINE ANTI-ROTATION) NOTE: The above information is only given as an example;
2 NOZZLE TIP ORIFICE R 0.750 variations may occur based on mold configurations and
6
INSULATION SHEET cooling factor. In some instances, it may be necessary to
4 Ø0.625 (OPTIONAL)
R0.030 obtain an empirical factor.
5
MIN. WIRE CHANNEL 0.375 2.125 0.06 X 45˚ 0.06 X 45˚ 0.06 X 45˚ 0.633 Min. - 1.283 Max.
MIN. 1.743 0.469 -0.001 HEAD C’BORE “O” DIA.
3 0.000 “S” DIA.
21 A + BE UNFILLED RESIN FILLED RESIN
R0.030 0.080 Min. 0.100 Min. 1.0005
0.375
WATER LINES 0.31 MIN. 1"-16 UN 0.06 X 45˚ 0.06 X 45˚ 0.06 X 45˚ 0.633 Min. - 1.283 Max.
MIN. WIRE CHANNEL 2.125 TORQUE TO 30 FT/LBS D-MAX Hot Sprue Bushings | High Performance Hot Sprue Bushing 625 Series
MIN. 0.469 -0.001 HEAD C’BORE
3 0.000
BUSHING AND COMPONENT SPECIFICATIONS
1 A + BE ASSEMBLY COMPONENTS
ASSEMBLY “A” BUSHING BODY BUSHING HEAD CAST-IN HEATER HEAD HEATER THERMOCOUPLE
DIMENSION WATTAGE WATTAGE
1"-16 UN
WATER LINES 0.31 MIN. DETAIL #1 DETAIL #2 DETAIL #3 DETAIL #4 DETAIL #5
DMAX16090 3.543in (90.00mm) DEP16090 TORQUE TO 30 FT/LBS CIH0104-S 847 * Locating
DMAX16115 4.528in (115.00mm) DEP16115 CIH0096-S 1000 rings must
DMAX16140 5.512in (140.00mm) DEP16140 CIH0097-S 1030 be ordered
DMAX16165 6.496in (165.00mm) DEP16165 DBP16001 CIH0098-S 1100 RDP38021 500 DTC62501 separately.
DMAX16190 7.480in (190.00mm) DEP16190 CIH0099-S 1000
625 SERIES
DMAX16215 8.465in (215.00mm) DEP16215 CIH0101-S 1200
POINT GATE (BODILESS)
DMAX16240 9.449in (240.00mm) DEP16240 CIH0102-S 1200
MACHINING DIMENSIONS
DMAX16265 10.433in (265.00mm) DEP16265 Ø2.125 MIN CIH0103-S 1200 Ø2.125 MIN Ø2.125 MIN
Ø2.125 MIN
80°
30° POINT GATE 30° STD. SPRUE AND 30° EXTENDED SPRUE EXTENDED SPRUE AND
30°
625 SERIES
(BODILESS)
R0.125 POINT GATE (BODILESS) POINT GATE RUNNER DESIGN ANGLE DESIGN
MACHINING DIMENSIONS (FULL BODY) 25° MAX.
R0.010-0.015 Ø2.125 MIN Ø2.125 MIN MIN. CUSTOMER +.0005 Ø2.125 MIN +.0005 0.08 MIN.
+.0005
RADIUS TO
Ø2.125 MIN -.0000
-.0000
R0.312 80° AT TANG. 0.125 0.235 0.47 ØS SUIT ØS 0.08 MIN. ØS -.0000
30° ØO 0.005 LAND MAX 30° 0.08 30° 30°
R0.125 +0.0005
Ø0.6250 0.0000 25° MAX.
R0.010-0.015 +.0005 CUSTOMER +.0005 +.0005 0.08 MIN.
-.0000
RADIUS TO
-.0000
R0.312 AT TANG. 0.020 0.125 0.235 0.47 ØS MIN. SUIT ØS 0.08 MIN. ØS -.0000
ØO 0.005 LAND MAX 0.08
+0.0005
Ø0.6250 0.0000 0.020
U.S. 800-626-6653 n Canada 800-387-6600 n dme@milacron.com n www.milacron.com