High Speed Steel SKH51
STRAIGHT EJECTOR PINS WITH GAS VENT –HEADBAND/TIP DIAMETER DESIGNATION/L DIMENSION DESIGNATION TYPE/P/L DIMENSION DESIGNATION TYPE–
Part Number – L – P – PC – NV – (VKC/VWC … etc.) GVB–EPHB3 –148.36– P2.96 –PC2.94– NV2.0 – KC1.48
High Speed Steel SKH51 + Hard chromate Die Steel SKD61 + Nitriding High Speed Steel SKH51
Alterations
Alteration details D P.9
Alterations Code
Spec.
Alterations Code
Spec.
Head diameter change HC = 0.1mm increments E P + 1 ≦ HC < H
Precision single flat cutting P/2 ≦ VKC < H/2
VKC
HC
VKC － 0.02 0
Step R
Step R
C0.1 ± 0.05
C0.1 ± 0.05
Die Steel SKD61
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
About Designation Unit for Key Flat Cutting
Precision two flats cutting P/2 ≦ VWC < H/2
VWC
HCC
Enlarged view of A part
Enlarged view of A part
Enlarged view of B part
Enlarged view of B part
VWC － 0.02 0
b 1 (Range of guaranteed shaft diameter precision)
b 1 (Range of guaranteed shaft diameter precision)
x 1
x 1
Pre–Hardened Die Steel SKD61
＋
＋
＋ 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
Single flat cutting P/2 ≦ KC < H/2
0 － 0.02
KC
TC
TC
KC － 0.1 0
Stainless Steel SUS440C
(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
T
Numbering on the head Range of designation and Designation method: D P.10 X Combination with SKC not available Automatic sequential numbering on the head Range of designation and Designation method: D P.10 X Combination with SKC not available
217
WKC Two flats cutting P/2 ≦ WKC < H/2
0 － 0.02 T
0 － 0.02 T
B Part
B Part
NHC
4mm
0 － 0.1
＋ 0.02 0
（ L ＞ 200 L L ＋ 0.02 0
＋ 0.05 0 （ L ＞ 200 L
） ＋ 0.05 0
）
WKC
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
JIS (6/8mm)
40.00– 60.00 60.01–200.00 200.01–350.00
15 30 50
Varied dimension flat cutting P/2 ≦ KAC < H/2 KBC = 0.1mm increments only KAC < KBC < H/2
Part Number
Head thickness T P Tolerance T PCTolerance
KAC KBC
1 2 3
NHN
－ 0.1 0
－ 0.1 0
GVB–EPH–L GVB–EPHB GVB–EPHE–L GVB–EPHBE GVB–EPHJ–L GVB–EPHJB GVB–EPHJE–L GVB–EPHJBE
10mm
0 –0.005
KAC
KBC
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 except for gas vent. )
4mm (T4)
–0.01 –0.02
P –0.01 –0.02 P 0 - 0.005 –
0 –0.005
Two flats (right angled) cutting P/2 ≦ RKC < H/2
RKC
■ Characteristics Let gas out from the inside of the cavity via the clearance around the ejector pin.
0 –0.005
RKC － 0.1 0
Example
6/8mm (JIS)
–0.01 –0.02
P 0
(2) To designate arbitrary key flat dimensions Unit of designation 0.1mm
DKC Three flats cutting P/2 ≦ DKC < H/2
–0.002
■ L dimension designation type
0 － 0.1
DKC
DKC
Standard Size Total Length Designation
Part Number
0.01mm increments
PL Line
Head thickness 4mm Head thickness JIS
NV 0.5mm increments
Type
H T H T
P
L
PC
Four flats cutting P/2 ≦ SKC < H/2
SKC
Head thickness 4mm Head thickness JIS
SKC － 0.1 0
2
4 5 6
E Flat cutting position is set at 90°of SV dimension in counter clockwise direction.
Shaft Diameter Designation Shaft Diameter/ Total Length Designation
2.5
0.5–8.0
± 0.5 AG ° 0 ° KGC 120 ° 120 °
Two flats (angled) cutting P/2 ≦ KGC < H/2 AG = 1° increments 0 < AG < 360
–
– –
3
40.00–300.00
KGC
( GVB–EPH–L GVB–EPHJ–L ) P–0.08 ≦ PC ＜ P
3.5
7
GVB–EPH–L ( P 0 –0.005 )
4
8
4.5 40.00–300.00 (350.00)
8
Three flats cutting at 120° P/2 ≦ KTC < H/2
Tip Process
GVB–EPHJ–L ( P 0 –0.005 )
－ 0.1 120 ° 0
5
KTC
9
4
5.5
6
KTC
GVB–EPHE–L ( P –0.01 –0.02 )
9
Engraving
2.0–10.0
6
10
( GVB–EPHE–L GVB–EPHJE–L ) P–0.08 ≦ PC ＜ P–0.02
6.5 7
GVB–EPHJE–L ( P –0.01 –0.02 )
40.00–350.00
10
11
Gas Vent
8
11 15
13 15 17
10
8
17 12 E When P = PC; refer to D P.49 . E L in ( ) is applicable only for head thickness 4mm type.
■ P/L dimension designation type
Part Number
0.01mm increments
NV 0.5mm increments
Head thickness 4mm Head thickness JIS
Gas ow
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 10.00–11.99
5 6
0.5–8.0
3
–
– –
40.00–300.00
3.5
( GVB–EPHB GVB–EPHJB ) P–0.08 ≦ PC ＜ P
7
4
GVB–EPHB ( P 0 –0.005 )
8
4.5 40.00–300.00 (350.00)
8
GVB–EPHJB ( P 0 –0.005 ) GVB–EPHJBE ( P –0.01 –0.02 )
5
9
5.5
6
4
9
2.0–10.0
6
GVB–EPHBE ( P –0.01 –0.02 )
10
( GVB–EPHBE GVB–EPHJBE ) P–0.08 ≦ PC ＜ P–0.02
6.5
40.00–350.00
10
11
7 8
11 15 17
13 15 17
10 12
8
E When P = PC; refer to D P.49 . E L in ( ) 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
Quotation
51
52
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