Shaft diameter/ Total length designation type
High Speed Steel SKH51
STRAIGHT EJECTOR PINS –P/L DIMENSION DESIGNATION TYPE–
L
Part Number – L – P – (KC/WKC … etc.) EPHJB 5 – 350.00 – P4.72 – KC2.5
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, P ≧ 1.5
EPYB EPHB EPHJB
EPHBE EPHJBE
Precision single flat cutting P/2 ≦ VKC < H/2
VKC
HC
VKC － 0.02 0
b 1 (Range of guaranteed shaft diameter precision)
x 1
Die Steel SKD61
Head diameter change (precision) HCC = 0.1mm increments E P + 1 ≦ HCC < H−0.3, P ≧ 1.5 Head thickness change TC = 0.1mm increments E T/2 ≦ TC < T, P ≧ 1.5 (Dimension L remains unchanged) E T−TC ≦ Lmax.−L Dowel hole boring E Applicable when H ≧ 4 X Combination with other than NHC/ NHN/TMC/GVC not available Dowel hole + Spring pin driving E Applicable when H ≧ 4 X Combination with other than NHC/ NHN/TMC/GVC not available
VWC Precision two flats cutting P/2 ≦ VWC < H/2
HCC
0 － 0.02
Pre–Hardened Die Steel SKD61
VWC
T R ≦ 0.5 （ P ≦ 2 R ≦ 0.3 ） 0 － 0.02
Stainless Steel SUS440C
Single flat cutting P/2 ≦ KC < H/2
0
KC
TC
P － 0.02 － 0.01
TC
KC － 0.1 0
－ 0.02
About Designation Unit for Key Flat Cutting
0 －
P
0.005
＋ 0.02 0
＋ 0.05 0
（ L ＞ 200 L
）
T
L
4mm
0 ＋ 0.1
T d L 4 2 3 6 3 5 8 T d L 1 4 2 5 6 3 8
d
Part Number
Head thickness
T P Tolerance
WKC Two flats cutting P/2 ≦ WKC < H/2
NC
EPYB
JIS (6/8mm)
0 － 0.1
M Material H Hardness
SKH51
4mm (T4)
WKC
0 –0.005
EPHB EPHJB EPHBE EPHJBE
T
58–60HRC Range of guaranteed shaft diameter precision/base material hardness (Details D P.7 ) EPYB is an overall quenched product. (No annealing on head)
(1) To align the key flat with the shaft diameter Unit of designation 0.005mm increments possible EPYB only 0.0025mm increments possible
6/8mm (JIS)
10mm
Varied dimension flat cutting P/2 ≦ KAC < H/2 KBC = 0.1mm increments only KAC < KBC < H/2
d
4mm (T4)
–0.01 –0.02
KAC KBC
NCW
6/8mm (JIS)
－ 0.1 0
－ 0.1 0
KAC
KBC
P –0.01 –0.02 P 0 - 0.005 –
T
Part Number
Numbering on the head Range of designation and Designation method: D P.10 E Available when H ≧ 2 X Combination with SKC/MC not available Automatic sequential numbering on the head Range of designation and Designation method: D P.10 E Available when H ≧ 2 X Combination with SKC/MC not available
L 0.01mm increments
P 0.005mm increments
H
T
217
Two flats (right angled) cutting P/2 ≦ RKC < H/2
Type
No. 0.4 0.5 0.6 0.7 0.8 0.9
RKC
NHC
RKC － 0.1 0
P 0
0.300–0.395 0.400–0.495 0.500–0.595 0.600–0.695 0.700–0.795 0.800–0.895 0.900–0.995
–0.002
EPYB ( P 0 –0.005 )
Standard Size Total Length Designation
DKC Three flats cutting P/2 ≦ DKC < H/2
1 2 3
NHN
20.00–60.00
2
4
0 － 0.1
(2) To designate arbitrary key flat dimensions Unit of designation 0.1mm
DKC
DKC
1
Lapping on the tip face E Available when P ≧ 0.6 X EPYB Not available Gas vent machining S, B = 1mm increments E 2 ≦ S ≦ 10, S + 5 ≦ B ≦ 30 E Available when P ≧ 3
Shaft Diameter Designation Shaft Diameter/ Total Length Designation
Four flats cutting P/2 ≦ SKC < H/2
SKC
TMC
－ 0.1 SKC 0
L
Head thickness 4mm Head thickness JIS
Part Number
0.01mm increments
Type
0 ° KGC AG ° 120 ° 120 °
± 0.5
Two flats (angled) cutting P/2 ≦ KGC < H/2 AG = Designation 1° increments 0 < AG < 360
H
T
H
T
No.
L
P
Head thickness 4mm Head thickness JIS
KGC
GVC
Tip Process
0.5 0.6 0.7 0.8 0.9
0.40– 0.49 0.50– 0.59 0.60– 0.69 0.70– 0.79 0.80– 0.89 0.90– 0.99 1.00– 1.49 1.50– 1.99 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
S
B
40.00–100.00
Engraving
Head tapping E Applicable to P ≧ 8.00 of EPHJB/ EPHJBE X Combination with other than TMC/ GVC not available
MC
3
Three flats cutting at 120° P/2 ≦ KTC < H/2
P M P 8.00– 9.99 M4 P10.00–11.99 M5
120 °
40.00–150.00
KTC
MC
Gas Vent
0
KTC
M × 1
－ 0.1
1
–
–
–
40.00–200.00
1.5
2
40.00–250.00
4 5 6
EPHB ( P 0 –0.005 )
2.5
3
40.00–300.00
3.5
4
7
4
EPHBE ( P –0.01 –0.02 )
8
4.5
40.00–300.00(350.00)
8
EPHJB ( P 0 –0.005 )
5
9
5.5
6
9
6
10
6.5
40.00–350.00
10
11
EPHJBE ( P –0.01 –0.02 )
7 8
11 15 17
13 15 17
10 12
8
E The L dimension enclosed in brackets ( ) is applicable only for EPHB/EPHBE.
Delivery Quotation
Part Number – L – P EPHJB 5 – 350.00 – P4.72
Order
19
20
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