High Speed Steel SKH51
STRAIGHT EJECTOR PINS WITH GAS VENT –HEADBAND/TIP DIAMETER DESIGNATION/SHAFT DIAMETER SELECTION/ SHAFT DIAMETER DESIGNATION TYPE–
Part Number – L – P – PC – NV – (VKC/VWC … etc.) GVB–EPHB3 –148.36– P2.96 –PC2.94– NV2.0 – KC1.48
Alterations
Alteration details D P.9
Alterations Code
Spec.
Alterations Code
Spec.
Head diameter change HC = 0.1mm increments E P + 1 ≦ HC ＜ H
HC
Precision single flat cutting P/2 ≦ VKC < H/2
VKC
VKC － 0.02 0
Step R
Step R
About Designation Unit for Key Flat Cutting
C0.1 ± 0.05
C0.1 ± 0.05
Head diameter change (precision) HCC = 0.1mm increments E P + 1 ≦ HCC ＜ H–0.3 Head thickness change TC = 0.1mm increments E T/2 ≦ TC ＜ T (Dimension L remains unchanged) E T–TC ≦ Lmax.–L
HCC
Precision two flats cutting P/2 ≦ VWC < H/2
Enlarged view of A part
Enlarged view of A part
Enlarged view of B part
Enlarged view of B part
VWC
b 1 (Range of guaranteed shaft diameter precision)
b 1 (Range of guaranteed shaft diameter precision)
x 1
x 1
VWC － 0.02 0
＋
＋
＋ 0.2 0
＋ 0.2 0
5 0
5 0
R ≦ 0.5
R ≦ 0.5
2
2
NV
NV
SV
SV
A part
A part
(1) To align the key flat with the shaft diameter Unit of designation GVB–EPH–L/ GVB–EPHE–L GVB–EPHJ–L/ GVB–EPHJE–L 0.05mm increments possible GVB–EPHB/GVB–EPHBE GVB–EPHJB/ GVB–EPHJBE 0.005mm increments possible
Single flat cutting P/2 ≦ KC ＜ H/2
0 － 0.02
TC
KC
TC
KC － 0.1 0
T
WKC Two flats cutting P/2 ≦ WKC ＜ H/2
Numbering at the back part of the head Range of designation and Designation method: D P. 10 X Combination with SKC not available Numbering at the back part of the head (Automatic sequential numbering) Range of designation and Designation method: D P. 10 X Combination with SKC not available
217
0 － 0.1
NHC
0 － 0.02 T
0 － 0.02 T
WKC
B part
B part
＋ 0.02 0
（ L ＞ 200 L L ＋ 0.02 0
＋ 0.05 0 （ L ＞ 200 L
） ＋ 0.05 0
）
P
P
P d 2 – 2.49 P−0.2 2.50– 3.99 P−0.4 4.00–12 P−0.6
L
SV
L
Varied width parallel flats cutting P/2 ≦ KAC ＜ H/2 KBC = 0.1mm increments only KAC ＜ KBC ＜ H/2
40.00– 60.00 60.01–200.00 200.01–350.00
15 30 50
KAC KBC
－ 0.1 0
－ 0.1 0
Part Number
Head thickness T P Tolerance T PCTolerance
1 2 3
KAC
KBC
NHN
GVB–EPH–L GVB–EPHB GVB–EPHE–L GVB–EPHBE GVB–EPHJ–L GVB–EPHJB GVB–EPHJE–L GVB–EPHJBE
0 –0.005
M Material SKH51 H Hardness 58–60HRC Range of guaranteed shaft diameter precision/Base material hardness (Details D P.7 ) ( Range of guaranteed shaft diameter precision is only for the shaft diameter excluding gas vent. )
4mm (T4)
–0.01 –0.02
Two flats (right angled) cutting P/2 ≦ RKC ＜ H/2
RKC
RKC － 0.1 0
0 –0.005
■ Features Let gas out from the inside of the cavity via the clearance around the ejector pin.
0 –0.005
Example
6/8mm (JIS)
–0.01 –0.02
DKC Three flats cutting P/2 ≦ DKC ＜ H/2
0 － 0.1
DKC
DKC
(2) To designate arbitrary key flat dimensions Unit of designation 0.1mm
■ Shaft diameter selection type
Head thickness 4mm
Head thickness JIS
Part Number
0.01mm increments
PL Line
Four flats cutting P/2 ≦ SKC ＜ H/2
NV 0.5mm increments
SKC
SKC － 0.1 0
Type
H T H T
P
L
PC
Head thickness 4mm Head thickness JIS
± 0.5 AG ° 0 ° KGC 120 ° 120 °
Two flats (angled) cutting P/2 ≦ KGC ＜ H/2 AG = 1° increments 0 < AG < 360
2
4 5 6
E Flat cutting position is set at 90° of SV dimension in counter clockwise direction.
KGC
2.5
0.5–8.0
–
– –
3
40.00–300.00
( GVB–EPH–L GVB–EPHJ–L ) P–0.08 ≦ PC ＜ P
3.5
7
GVB–EPH–L ( P 0 –0.005 )
4
Three flats cutting at 120° P/2 ≦ KTC ＜ H/2
－ 0.1 120 ° 0
8
KTC
4.5 40.00–300.00 (350.00)
8
GVB–EPHJ–L ( P 0 –0.005 )
KTC
5
9
4
5.5
6
GVB–EPHE–L ( P –0.01 –0.02 )
9
2.0–10.0
6
10
( GVB–EPHE–L GVB–EPHJE–L ) P–0.08 ≦ PC ＜ P–0.02
6.5 7
40.00–350.00
10
11
GVB–EPHJE–L ( P –0.01 –0.02 )
8
11 15
13 15 17
10
8
17 12 E When P = PC; refer to D P.49 . E L dimension ( ) size is applicable only for head thickness 4mm type.
■ Shaft diameter designation type
Head thickness 4mm
Head thickness JIS
Gas ow
Part Number
0.01mm increments
NV 0.5mm increments
Type
H T H T
No.
L
P
PC
Head thickness 4mm Head thickness JIS
2.5
2.00– 2.49 2.50– 2.99 3.00– 3.49 3.50– 3.99 4.00– 4.49 4.50– 4.99 5.00– 5.49 5.50– 5.99 6.00– 6.49 6.50– 6.99 7.00– 7.99 8.00– 9.99
5 6
0.5–8.0
3
–
– –
40.00–300.00
( GVB–EPHB GVB–EPHJB ) P–0.08 ≦ PC ＜ P
3.5
7
4
GVB–EPHB ( P 0 –0.005 )
8
4.5 40.00–300.00 (350.00)
8
GVB–EPHJB ( P 0 –0.005 )
5
9
5.5
6
4
9
2.0–10.0
6
10
GVB–EPHBE ( P –0.01 –0.02 )
( GVB–EPHBE GVB–EPHJBE ) P–0.08 ≦ PC ＜ P–0.02
6.5
40.00–350.00
10
11
GVB–EPHJBE ( P –0.01 –0.02 )
7 8
11 15
13 15 17
10 12
8
17 10.00–11.99 E When P = PC; refer to D P.49 . E L dimension ( ) size is applicable only for head thickness 4mm type.
Part Number – L – P – PC – NV GVB–EPH–L5 – 210.00 – PC4.96 – NV2.0 GVB–EPHB3 – 148.36 – P2.96 – PC2.94 – NV2.0
Delivery Quotation
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