Die Steel SKD61 + Nitriding
STRAIGHT EJECTOR PINS WITH GAS VENT –L DIMENSION DESIGNATION/ P/L DIMENSION DESIGNATION WITH CUTTING FACETS TYPE–
Part Number – L – P – E GW–EPN–L5 GWS–EPJB6 – – 100.00 200.00 – P7.50 – – E0.03 E0.03
High Speed Steel SKH51 + Hard chromate Die Steel SKD61 + Nitriding High Speed Steel SKH51
Order
Quotation Delivery
b 1 (Range of guaranteed shaft diameter precision)
x 1
Step R
Single face cutting
Four faces cutting
＋
5 0
R ≦ 0.5
SV
A part
Part Number – L – P – E – (KC/WKC … etc.) GW–EPN–L5 – 100.00 – E0.03 – KC2.5
Die Steel SKD61
Enlarged view of A part
Alterations
Pre–Hardened Die Steel SKD61
Alteration details D P.9
10 (Guaranteed length for E dimension gas vent depth)
E 4 －
± 0.01
T
Alterations Code
Spec.
Alterations Code
Spec.
＋ 0.02 0
＋ 0.05 0
＋ 0.5 0
P
, L ＞ 500 c L
）
（ 200 ＜ L ≦ 500 c L
P
L
Stainless Steel SUS440C
Head diameter change HC = 0.1mm increments E P + 1 ≦ HC ＜ H
Single flat cutting P/2 ≦ KC < H/2
HC
KC
KC － 0.1 0
4mm
Part Number
Head thickness change TC = 0.1mm increments E T/2 ≦ TC ＜ T (Dimension L remains unchanged) E T−TC ≦ Lmax.−L Dowel hole boring E Applicable when H ≧ 4 X Combination with other than NHC/ NHN not available Dowel hole + Spring pin driving E Applicable when H ≧ 4 X Combination with other than NHC/ NHN not available Dowel hole + Dowel pin driving E Applicable when H ≧ 4 X Combination with other than NHC/ NHN not available
Head thickness
SV
T T Tolerance
P Tolerance
P
T
40 ≦ L ＜ 60
60 ≦ L ＜ 105
L ≧ 105
Single face cutting Four faces cutting
WKC Two flats cutting P/2 ≦ WKC < H/2
JIS (6/8mm)
About Designation Unit for Key Flat Cutting
TC
0 － 0.1
3.00– 4.99 5.00– 9.99 10.00–25.00
15 30 30
30 30 50
30 50 50
P 3–13 15–20 25
TC
4mm (T4)
0 –0.02
WKC
L
GW–EPN–L GWS–EPN–L
–0.01 –0.02 –0.01 –0.03
–0.01 –0.03 –0.01 –0.03
–0.01 –0.04 –0.01 –0.05
L ≦ 500 L ＞ 500
T
Varied dimension flat cutting P/2 ≦ KAC < H/2 KBC = 0.1mm increments only KAC < KBC < H/2
10mm
6/8mm (JIS)
0 –0.05
SKD61 equivalent + Nitriding 900HV– Base material: 40–45HRC Surface:
KAC KBC
M Material H Hardness
GW–EPJ–L GWS–EPJ–L
＋ 0.1
T d ℓ 4 2 3 6 3 5 8
－ 0.1 0
0 d
－ 0.1 0
KAC
KBC
P –0.01 –0.02 P 0 - 0.005
NC
4mm (T4)
0 –0.02
Range of guaranteed shaft diameter precision/Base material hardness/Range of guaranteed surface hardness for nitriding (details D P.7 ) ( Range of guaranteed shaft diameter precision is only for the shaft diameter except for gas vent. )
GW–EPNB GWS–EPNB
P ≦ 12.00 P ＞ 12.00 –0.01 –0.02 –0.01 –0.03
(1) To align the key flat with the shaft diameter Unit of designation 0.05mm increments possible
T
Two flats (right angled) cutting P/2 ≦ RKC < H/2
RKC
6/8mm (JIS)
0 –0.05
GW–EPJB GWS–EPJB
RKC － 0.1 0
ℓ 1
T d 4 2
d
P 0
NCW
–0.002
6 8
5
3
■ L dimension designation type Head thickness 4mm Head thickness JIS
DKC Three flats cutting P/2 ≦ DKC < H/2
T
Standard Size Total Length Designation
0 － 0.1
Part Number
0.01mm increments
DKC
DKC
ℓ 2
T d 4 2
Type
L (L ＞ 500 c 0.1mm increments)
d
H T H T
P
E
Head thickness 4mm Head thickness JIS
NCS
Four flats cutting P/2 ≦ SKC < H/2
(2) To designate arbitrary key flat dimensions Unit of designation 0.1mm
6 8
5
3
40.00–500.00 40.00–400.00 40.00–500.00 40.00–400.00
6
SKC
3
SKC － 0.1 0
T
3.1 3.5 3.6
3.2
3.3
3.4
Shaft Diameter Designation Shaft Diameter/ Total Length Designation
–
– –
7
± 0.5 AG ° 0 ° KGC 120 ° 120 °
3.7
3.8
3.9
Two flats (angled) cutting P/2 ≦ KGC < H/2 AG = Designation 1° increments 0 < AG < 360
Numbering on the head Range of designation and Designation method: D P.10 X Combination with SKC/MC not available Automatic sequential numbering on the head Range of designation and Designation method: D P.10 X Combination with SKC/MC not available
217
NHC
4
40.00–500.00 (700.0)
KGC
(4.1)
(4.2)
(4.3)
(4.4)
40.00–400.00
8
4.5
40.00–500.00 (700.0)
8
(4.6)
(4.7)
(4.8)
(4.9)
40.00–400.00
Tip Process
1 2 3
5
40.00–500.00 (700.0)
NHN
Three flats cutting at 120° P/2 ≦ KTC < H/2
Single face cutting GW–EPN–L
－ 0.1 120 ° 0
9
KTC
(5.1)
(5.2)
(5.3)
(5.4)
40.00–400.00 40.00–500.00 40.00–400.00
Engraving
Single face cutting 0.02–0.05
6
5.5
KTC
9
4
Head tapping E Available when P ≧ 8 for
P 8
M
(5.6)
(5.7)
(5.8)
(5.9)
Single face cutting GW–EPJ–L
MC
10
Four faces cutting GWS–EPN–L
Gas Vent
M4
6
40.00–500.00 (700.0)
MC
Four faces cutting 0.03–0.05
GW (S)–EPJ–L/GW (S)–EPJB X Combination with any other alteration not available
10 M5 12/15 M6 16–25 M8
(6.1)
(6.2)
(6.3)
(6.4)
40.00–400.00
6.5
10
11
M × 1
Four faces cutting GWS–EPJ–L
7 8
11 15 17 18 20 21
13 15 17 18 20 21 25 30
10 12
40.00–500.00 (700.0)
■ Characteristics Let gas out from the inside of the cavity via the clearance around the ejector pin.
(13)
8
Example
15 16 20
40.00–700.0
– –
–
25 e The P dimension enclosed in brackets ( ) is applicable only for GW–EPN–L and GWS–EPN–L. e The L dimension enclosed in brackets ( ) is applicable only for GW–EPJ–L and GWS–EPJ–L. ■ P/L dimension designation type Head thickness 4mm Head thickness JIS Part Number
PL Line
0.01mm increments
Type
H T H T
No.
L
P
E
Head thickness 4mm Head thickness JIS
–
3.5
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
7
4
8
4.5
8
5
9
Single face cutting GW–EPNB
5.5
6
9
6
10
Single face cutting GW–EPJB
Single face cutting 0.02–0.05
6.5
4
10
11
7 8
40.00–500.00
Four faces cutting GWS–EPNB
Four faces cutting 0.03–0.05
11 15 17 20 21
13 15 17 20 21 25 30
Four faces cutting GWS–EPJB
10 12 15 16 20 25
Gas ow
10.00–11.99 12.00–14.99 15.00–15.99 16.00–19.99 20.00–24.99
8
– –
–
53
54
e Nitriding may extend to the head as it is applied after dimension P machining.
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