Inner Diameter Tapered B Dimension Selection Type
PIN–POINT GATE BUSHINGS INNER DIAMETER TAPERED – B DIMENSION SELECTION TYPE – NORMAL TYPE/TIP CORNER ACUTE ANGLE TYPE
SKH51
SKH51
B
E The inside diameter is finished by electric discharge.
E The angle (K°) and the secondary sprue (A°) are roundly connected.
L 0.01mm increments
Shape 1A
Part Number
Enlarged view of the tip
Shape 4A only E R 0.1mm increments
None for 2A C 0.1mm increments
Shape 1A only V 0.1mm increments
Shape 3A only S° 1° Increments
G
H G B
P
A° K°
＊
Type Shape D
6.3
1.6
20 30 20 30 40 20 30 40 50 60
0.2–0.5 1.5–2.4
0.6–1.0
2.5 8.00–25.00 0.3 0.4 0.5 0.6 ( ＊ 1)
4 1.0 4
1A
0.2
2.0–2.9
3
0.5 0.6 0.7 0.8 ( ＊ 2) 0.6 0.7 0.8 0.9 1.0 1.2 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)
5
PGHBV (Normal Type)
1
≦ R 0.2
0.3–0.8
0.8–1.5
10.00–40.00
1–45
1.2 6
2A
0
R ≦ 0.2
（
L － C － B ） － 0.02
2.5–3.9
4
6
B
0
＋ 0.02
3A
D － 0.005
（ L － C ）
C
± 0.05
0
2
3.5–4.9
1.0–2.0
5
＊ This bushing has a flat area of 0–0.2 (PGHBV) 0–0.05(PGHBVZ) on its tip (P dimension).
8
P dimension tolerance
Type
Eccentricity between D and P is 0.05 or less Eccentricity between D and V is 0.05 or less
PGHBVZ (Tip Corner Acute Angle Type)
L
(4A) ( ＊ 5)
PGHBV PGHBVZ
± 0.01 ± 0.02
4.0–5.9
1–50
1.5–3.0
6
1.5
9
0.5–1.5
15.00–60.00
10
3
4.5–7.9
2.0–4.0
8
11
Enlarged view of the tip
(5A) ( ＊ 5)
Shape 2A
＊
1–60
1.2 1.3 1.4 1.5 1.6
G
5.0–9.9
2.5–5.0
10
13 2.0
6.3
1.6
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° ( ＊ 3) P1.2–P1.4 (D5) cannot be selected only for K60°
( ＊ 4) When P1.5/P1.6 (D6) and K30° or more, G is 1.2.
0.2
( ＊ 5) Shape ( ) is only for PGHBV.
≦ R 0.2
0 － 0.02
（ L － B ）
B
－ 0.005 0
PartNumber – L – P – A – K – CVSR PGHBV1A4 – 20.01 – P0.8 – A2 – K30 – C0.5–V3.0 PGHBVZ2A4 – 20.01 – P0.8 – A2 – K30 PGHBVZ3A4 – 20.01 – P0.8 – A2 – K30 – C0.5 – S30 PGHBV4A4 – 20.01 – P0.8 – A2 – K30 – C0.5 – R1.0 PGHBV5A4 – 20.01 – P0.8 – A2 – K30 – C0.5
D
＊ This bushing has a flat area of 0–0.2 (PGHBV) 0–0.05(PGHBVZ) on its tip (P dimension).
Order
P dimension tolerance
Type
＋ 0.02
L
0
Eccentricity between D and P is 0.05 or less
PGHBV PGHBVZ
± 0.01 ± 0.02
Enlarged view of the tip
Shape 3A
＊
G
6.3
1.6
Delivery Quotation
■ Features
＜ Enlarged photograph of tip ＞
＜ Enlarged view of the tip ＞
0.2
Part Number –L–P–A–K–CVSR– (CC/CVC … etc.) PGHBV1A4 – 20.01 – P0.8 – A2 – K20 – C0.5–V3.0 – CVC0.3
≦ R 0.2 B
Alterations
0 － 0.02
（ L － C － B ）
－ 0.005 0
＋ 0.05
P ± 0.01
P ± 0.02
D
（ L － C ）
＊ This bushing has a flat area of 0–0.2 (PGHBV) 0–0.05(PGHBVZ) on its tip (P dimension).
± 0.05 C
P dimension tolerance
0
Type
Alterations Code
Spec.
L
PGHBV PGHBVZ
± 0.01 ± 0.02
Eccentricity between D and P is 0.05 or less
Changes P dimension tolerance. P ± 0.02 c P ± 0.01 E Only applicable for PGHBVZ.
PKC
Shape 4A
Enlarged view of the tip
G
＊
Tip Corner Acute Angle Type
Tip Corner Acute Angle Type
Normal Type
6.3
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 ＜ (H–D) 2 −0.1
C ± 0.1
Normal Type • It has a flat area of 0–0.2mm on its tip. • P dimension tolerance is ± 0.01. Tip Corner Acute Angle Type • It has a flat area of 0–0.05mm on its tip. • P dimension tolerance is ± 0.02.
1.6
CC
0.2
B
≦ R 0.2 B
CVC ± 0.05
0 － 0.02
（ L － C － B ）
R
CVC
－ 0.005 0
＋ 0.02
C
D
（ L － C ）
± 0.05 C
0
• With the straight part shorter than the normal type, the gate residual can be suppressed but durability may be decreased.
B
L
Eccentricity between D and P is 0.05 or less
＊ This bushing has a flat area of 0–0.2 on its tip (P dimension).
E V = 2 × R 2 – ( R 2 – (P/2) 2 –C) 2
E R ≧ (P/2) 2 + C 2
Shape 5A
Enlarged view of the tip
＜ Tip Corner Acute Angle Type ＞ Molding
＜ Normal Type ＞
G
＊
6.3
1.6
0.2
≦ R 0.2 B
－ 0.02 0
（ L － C － B ）
－ 0.005 0
＋ 0.05
C
D
（ L － C ）
± 0.05 C
0
L
Eccentricity between D and P is 0.05 or less
＊ This bushing has a flat area of 0–0.2 on its tip (P dimension).
＊ α≒ 2{(L−G)tan A°
K° 2 } + P
Part Number
M Material
H Hardness
● Calculation for the inlet diameter ＊ α
2 + Gtan
PGHBV □ A PGHBVZ □ A
G
G
SKH51
59–61HRC
L
L
E The dimension acquired using the above calculation is the theoretical (reference) value.
747
748
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