Page 88 - Hot Runner & Control Systems 2020

86 Straight-Shot Hot Sprue Bushings

T-Series Straight-Shot ™

The DME standard “T” Series Straight-Shot improves the
performance of three-plate molds by virtually eliminating the
sprue from the runner system. It is available with either /2" or
1
3
7
3 /4" spherical radius, 120 or 240 volt heater and a /8" or 1/8" long
stripper plate bushing to suit the application.
NOTE: 5° heater lead is standard. For 90° lead, add “90” to end of item
number (e.g., SSBT4517T10790).

NOTE:
5.09 The expansion factor must be taken into consideration prior
to machining for and installation of the bushing. This factor
+.000
7
No. 10-24 × LONG A = 1 8 1.995 DIA. –.005 (BE) must then be added to the A dimension. The formula for
1
determining this expansion factor is as follows:
2
F H S (2) INCLUDED .19 BE = “A” dimension x 0.00000633 x nozzle set point - 68ºF
(assuming the mold is at 68ºF during operation). If mold
.16 temperature is different, substitute 68ºF with actual mold
Hot Runner Systems | 4-Zone and 8-Zone Timer-Based Sequencers
.97 +.0000 DIA. temperature.
–.0005
Straight-Shot Hot Sprue Bushings | T-Series Straight-Shot ™
1.4995 .31 DIA. R
DIA. EXAMPLE:
.97 Given a setpoint of 500°F:
BE = 1.375 × .0000063 × (500 – 68) = .004 thus 1.375 +
.004 = 1.379.
Please note that the above information is given as an
.25 1.69 DIA. .340 example. Variations may occur based on mold configuration
and cooling factor. In some instances, it may be necessary
L to obtain an empirical factor.
T-Series Straight-Shot Hot Sprue Bushings
WITH 120 VOLT WITH 240 VOLT
Typical Application HEATER HEATER
TYPICAL APPLICATION R L
ITEM ITEM
NUMBER NUMBER
1 SSBT4517T107 7 ⁄8 SSBT4517T207
⁄2 SSBT4517T113 1 ⁄8 SSBT4517T213
3
3 SSBT6517T107 7 ⁄8 SSBT6517T207
⁄4 SSBT6517T113 1 ⁄8 SSBT6517T213
3
MOLD Replacement
OPEN Stripper Bushings

ITEM
NUMBER* L
SSSB07 7 ⁄8
SSSB13 1 ⁄8
3
*Includes mounting screws.

X-2 X-1 A-CLAMPING
PLATE PLATE PLATE
For Improved Performance
and Increased Productivity:
• Use DME standard T-Series (3-Plate) Mold Bases
(See DME Mold Bases and Plates Catalog)

U.S. 800-626-6653 n Canada 800-387-6600 n dme@milacron.com n www.milacron.com