Inner Diameter Tapered Head type
PIN–POINT GATE BUSHINGS WITH FLANGE INNER DIAMETER TAPERED – B DIMENSION SELECTION TYPE –
SKH51
SKH51
E The inside diameter is finished by electric discharge. E The angle (K°) and the secondary sprue (A°) are roundly connected.
Shape 1A
L 0.01mm increments
Part Number
Enlarged view of the tip
≦ R 0.2
None for 2A C 0.1mm increments
Shape 3A only S° 1° increments
Shape 1A only V 0.1mm increments
Shape 4A only E R 0.1mm increments
G
H D 2 G B
P
A° K°
＊
Type Shape D
6.3
1.6
20 30 20 30 40 20 30 40 50 60
2.5 10.00–25.00 0.3 0.4 0.5 0.6 ( ＊ 1)
0.2–0.5 1.5–2.4
0.6–1.0
7 41.0 4
R ≦ 0.2
0.5 0.6 0.7 0.8 ( ＊ 2)
3
2.0–2.9
8 5
R ≦ 0.2
0 － 0.02
4
1A
－ 0.1 － 0.2 ＋ 0.02 0
20.00–40.00
0.3–0.8
0.8–1.5
1–45
1.2 6
－ 0.005 0
（ L － C － B ）
1
D
B
0.6 0.7 0.8 0.9 1.0 1.2
4
2.5–3.9
9 6
（ L － C ）
C
± 0.05
＊ This bushing has a flat area of 0–0.2 on its P dimension tip.
2A
L
Eccentricity between D and P is 0.05 or less Eccentricity between D and V is 0.05 or less
PGHVT ( High Speed Steel SKH51 )
0.8 0.9 1.0 1.1 1.2 ( ＊ 3) 1.3 ( ＊ 3) 1.4 ( ＊ 3) 1.0 1.1 1.2 1.3 1.4 1.5 ( ＊ 4) 1.6 ( ＊ 4)
3A
2
3.5–4.9
1.0–2.0
5
11 8
Shape 2A
Enlarged view of the tip
＊
≦ R 0.2
4A
G
4.0–5.9
1–50
1.5–3.0
6
12 9
1.5
6.3
3
0.5–1.5
20.00–60.00
10
5A
1.6
8
4.5–7.9
2.0–4.0
14 11
1.2 1.3 1.4 1.5 1.6
1–60
≦ 0.2
R
10
5.0–9.9
2.5–5.0
16 13 2.0
0 － 0.02
4
0
－ 0.1 － 0.2
D
（ L － B ）
－ 0.005
E For shape 4A, R ≧ (P/2) 2 + C 2 ( ＊ 1) P0.6 (D2.5) can be selected only for K20° ( ＊ 2) P0.8 (D3) is selected from K20°/K30°
B
＊ This bushing has a flat area of 0–0.2 on its P dimension tip.
＋ 0.02 0
( ＊ 3) P1.2–P1.4 (D5) cannot be selected for K60° ( ＊ 4) When P1.5/P1.6 (D6) and K30° or more, G is 1.2.
Eccentricity between D and P is 0.05 or less
L
Shape 3A
Enlarged view of the tip
PartNumber – L – P – A – K – CVSR PGHVT1A4 – 35.01 – P0.8 – A2 – K30 – C0.5–V3.0 PGHVT2A4 – 35.01 – P0.8 – A2 – K30 PGHVT3A4 – 35.01 – P0.8 – A2 – K30 – C0.5 – S30 PGHVT4A4 – 35.01 – P0.8 – A2 – K30 – C0.5 – R1.0 PGHVT5A4 – 35.01 – P0.8 – A2 – K30 – C0.5
＊
≦ R 0.2
Order
G
6.3
1.6
≦ 0.2
R
0 － 0.02
4
0
D
－ 0.005
－ 0.1 － 0.2
（ L － C － B ） （ L － C ）
Quotation
B
Delivery
＊ This bushing has a flat area of 0–0.2 on its P dimension tip.
Example
Eccentricity between D and P is 0.05 or less
＋ 0.05 0
C
± 0.05
L
Locating Rings （ P.701−708 ）
Runner Lock pin （ P.713−722 ）
PartNumber – L – P – A – K – CVSR – (CC/CVC … etc.) PGHVT1A4 –35.01–P0.8–A2–K30–C0.5–V3.0– CC
Shape 4A
Enlarged view of the tip
≦ R 0.2
Alterations
Fixed side die plate
G
＊
6.3
Runner Stripper Plate
1.6
Alterations Code
Spec.
C ± 0.1
Pin-point gate bushings
Machining (C chamfering) for inlay relief. D2.5 → C0.2 D3/4 → C0.3 D5–10 → C0.5 Machining (C chamfering) for inlay relief. CVC = 0.1mm increments 0.2 ≦ CVC ＜ (D 2 −D) 2 −0.1
Fixed die plate
CC
≦ R 0.2
（ PGHVT □ A ）
0 － 0.02
R
4
B
Cavity Insert
＋ 0.02 0 － 0.1 － 0.2
（ L － C － B ） （ L － C ）
－ 0.005 0
D
C
B
CVC ± 0.05
C
± 0.05
CVC
Eccentricity between D and P is 0.05 or less
＊ This bushing has a flat area of 0–0.2 on its P dimension tip.
L
B
E R ≧ (P/2) 2 + C 2
E V = 2 × R 2 –( R 2 –(P/2) 2 –C) 2
Shape 5A
Adds a single key flat on the head X Not available when L ＜ 20 Adds a single key flat on the head. X Not available when L ＜ 20
Enlarged view of the tip
≦ R 0.2
G
＊
KC
D 2 /2 － 0.02 0
6.3
■ Features Pin–point gate bushings with head are capable of positioning at depth of counterbore of the head in vertical direction.
1.6
WKC
0
≦ 0.2
R
D 2 /2
－ 0.02
0 － 0.02
4
＋ 0.05 0 － 0.1 － 0.2
－ 0.005 0
D
（ L － C － B ）
C
B
（ L － C ）
Eccentricity between D and P is 0.05 or less
C
± 0.05
＊ This bushing has a flat area of 0–0.2 on its P dimension tip.
L
Part Number
M Material
H Hardness
● Calculation for the inlet diameter ＊ α
2 + Gtan K° 2 } + P
＊ α≒ 2{(L−G)tan A°
PGHVT □ A
G
SKH51
59–61HRC
G
L
L
E The dimension acquired using the above calculation is the theoretical (reference) value.
759
760
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