FLOW ADJUSTMENT BOLTS FOR RUNNER
RRCB
0 － 0.1 E
F
－ 0.01 － 0.03 A
CO
C0.3
M × P
1.5
T
M Material S45C
H Hardness 33–38HRC
s Surface treatment Black Oxide (Fe 3 O 4 )
Part Number – E RRCB6 – 4
Part Number
Order
F M × P W T
E
Type A
Delivery Quotation
8 M4 × 0.7 1.2 2
6 4 6 8
12 M6 × 1.0 1.6 2.5
RRCB
8
6 8 10
Example
16 M8 × 1.25 2
10
8 10 12
3
Stripper plate
Runner
■ Characteristics • Can be installed easily with the conventional runner flow rate adjustment pin. • Runner flow rate can be adjusted with bolt height. • Both 2–plate and 3–plate can be used. • Can be installed from either runner side or stripper plate side. • Set a clearance that creates no burr for installation dimensions of A. • Designed for runner flow rate adjustment so cannot stop runner completely. • It is effective to select A dimension wider than the runner width.
Flow adjustment bolts for runner Selection side plate
Process the installation hole and set a short object of E dimension to prevent resin from entering into it. (RRCB6–4)
Select a long object of E dimension and adjust the runner flow rate. (RRCB6–6)
■ How to mount
■ How to adjust (Example: RRCB8–10)
10
Flow adjustment bolts for runner
A dimension + clearance
2.5
Before adjustment
Runner groove
9
Selection side plate
※ Use such that the surface touches each other. If the surface is floating then bolt may get loose due to injection pressure.
1.5
After adjustment
M
As T dimension is adjusted to be longer, it is possible to adjust it by about 1mm by cutting the bolt head as indicated above.
Calculate the runner adjustment amount and process the counterbore and tap (M).
Install the runner flow rate adjusting bolt.
735
736
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