PIN GATE EXTENSION BUSHINGS
■ PGEHR/PGENR Example • Extension method for pin–point gate bushings • Extension method for cavity inserts
≦ R 0.3
■ Head Type Part Number M Material H Hardness PGEH SKH51 58–60HRC PGEN NAK80 37–43HRC E Eccentricity between D and V is 0.05 or less
Example
Runner cavity insert
Plate
■ PGEH/PGEN Example
0.8
PGEH or PGEN
PGEHR or PGENR
PGEHR or PGENR
0 － 0.02 4
0 － 0.01 0 － 0.3
D
＋ 0.5 ＋ 0.2
L
H
■ Head Type/Reversed Tapered Type Part Number M Material H Hardness PGEHR SKH51 58–60HRC PGENR NAK80 37–43HRC E Eccentricity between D and V is 0.05 or less ■ Headless Type Part Number M Material H Hardness PGEHS SKH51 58–60HRC PGENS NAK80 37–43HRC E Eccentricity between D and V is 0.05 or less
R ≦ 0.3
Cavity insert
Pin-point gate bushings
0.8
0 － 0.02 4
0 － 0.01 0 － 0.3
D
■ PGEHS/PGENS Example
＋ 0.5 ＋ 0.2 L
H
Runner cavity insert
Plate
PGEHS or PGENS
PGEHS or PGENS
0.8
＋ 0.5 ＋ 0.2
0 － 0.01
L
D
Part Number
L 0.1mm increments
A° Angled
H
V
Type
D
10.0–30.0 30.1–40.0 10.0–30.0 30.1–40.0 10.0–30.0 30.1–40.0 10.0–30.0
–Head Type– PGEH (SKH51) PGEN (NAK80) –Head Type/Reversed Tapered Type–
6
1.5 2.0 2.5
1 2
9
8
2.0 2.5 3.0 3.5
11
■ How to Select V Dimension
PGEHR (SKH51) PGENR (NAK80) –Headless Type– PGEHS (SKH51) PGENS (NAK80)
＊ To use this pin gate extension bushing together with a pin point gate bushing, select the appropriate α dimension from the following formula and designate V dimension. ( Calculation for the inlet diameter ＊α of Pin Point Gate Bushings Inner diameter SR type Inner diameter Tapered type ＊α≒ 2SR + 2 (L–G–SR) tan A° 2 ＊α= 2 {(L–G) tan A° 2 + Gtan K° 2 } + P E The dimension acquired using the above calculation is the theoretical (reference) value. ) V ≧α+x
10
3.0 3.5 4.0 4.5 5.0
1 2 3
15
13
4.5 5.0 5.5 6.0 6.5 7.0
18
30.1–40.0 E To use this bushing together with a pin–point gate bushing, select the appropriate dimension referring to"How to Select V Dimension"on the next page.
● X Dimension Table
Part Number – L – V – A PGEH 8 – 30.0 – V2.5 – A2 PGEHR8 – 30.0 – V2.5 – A2 PGEHS8 – 30.0 – V2.5 – A2
Delivery Quotation
Order
PIN GATE EXTENSION BUSHINGS
Matching Pin Point Gate Bushings
X
Eccentricity between D and α
Eccentricity between D and V
T α Tolerance
T V Tolerance
(Recommended value)
M Material
Type
PGH □ A PGHD □ A PGHT □ A PGHF □ A PGHBV □ A
PGHS PGHST PGHTBL
PGEH/PGEN
PGEHR/PGENR Reversed Tapered Type
Part Number – L – V (VC) – A – (AIW/AHW … etc.) PGEH10 – 28.34 – VC2.5 – A3 – AIW5 – GC7 – LKC
Alterations
SKH51
PGHB □ A PGHV □ A PGHVT □ A
± 0.1
0.05 or less
0.3
Alterations Code
Spec.
Alterations Code
Spec.
PGWB □ A PGW □ A
Runner Grooving Shape A (Trapezoid)
＊
Slotting on the head. on the head X L ＜ 16 not available Slotting on the head. on the head. X L ＜ 16 not available
E Available for head type
Carbide
W dimension and GC° selection W t GC° 4 3 7° 10° 5 3.5 6 4 8 5.5 10 7
E Available only for PGEH/PGEN Designation method AIW10−GC7
± 0.05
＊α V
＊α V
0.05 or less
AIW
KC
Pin-point gate bushings
Pin-point gate bushings
PGEB □ A PGE □ A PGEBV □ A PGEV □ A
PGED □ A PGEK □ A PGET □ A PGEBL
D/2
GC °
Key flat position when KC/WKC is combined E W ≦ ( β −0.4), L ≧ 20
R0.5
Electroforming
＊ AHW
E Available for head type
± 0.05
0.05 or less
0.3
WKC
Electroforming (High Hardness) PGKK □ A PGKT □ A PGKBL ＊ Please examine in advance at the time of designing the mold that the relationship between V and α will not be undercut when runner is pulled out. PGKB □ A PGK □ A
D/2
t
SR
SR
Runner Grooving Shape B (Semicircle)
Changes Full length L dimension tolerance. L + 0.5 + 0.2 c L + 0.05 0 X (L ＜ 16 not available) (L dimension designation in 0.01mm increments possible) Changes V dimension. VC = 0.1mm increments D L VCmin. VCmax. 6 10.0–25.0 1.5 3.5 25.1–30.0 3.0 8 10.0–25.0 5.0 25.1–30.0 4.5 D L VCmin. VCmax. 10 10.0–25.0 1.5 7.0 25.1–30.0 6.5 13 10.0–30.0 7.0
R dimension selection R 2 2.25 2.5 3 3.5 4
E Available only for PGEH/PGEN Designation method BIR4
BIR
LKC
L
Key flat position when KC/WKC is combined E R ≦ ( β −0.4)/2, L ≧ 20
■ Calculation for the inlet diameter ＊β of Pin Gate Extension Bushings ＊β= V + 2Ltan PGEH/PGEN PGEHR/PGENR
R
BHR
VC
A 2
PGEHS/PGENS
Runner Grooving Shape C (Arc + Tangent) 5 °
E Available only for PGEH/PGEN Designation method CIQ6
Q dimension selection Q
CIQ
Head diameter change D ≦ HC ＜ H 0.1mm increments
E Available for head type
Key flat position when KC/WKC is combined E Q ≦ ( β −0.4)/1.09, L ≧ 20
HC
4 5 6 8
CHQ
Q
Head thickness change
E Available for head type
2.0 ≦ TC ＜ 4 0.1mm increments E L dimension remains unchanged even when TC is used. E 4−TC ≦ Lmax.−L
TC － 0.02 0
TC
E ＊ Previously the trapezoidal taper angle was fixed at 10°, but now it is possible to select a taper angle of either 10° or 7°. When you wish to use a taper angle of 7°, specify "(Code)(W dimension)–GC7." If you do not specify the taper angle, then it is 10°.
4
L
L
L
779
780
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