SKD61 + Nitriding Concentricity ◎ 0.06 Head thickness JIS
STEPPED EJECTOR SLEEVE
PartNumber – L – V – P – C – N – S – (KC/WKC … etc.) ESJF6 – 150.00 – V3.0 – P5.50 – C4.0 – N80 – S85 – KC3.5
High Speed Steel SKH51 Die Steel SKD61 + Nitriding
Alterations
Alteration details D P.225
Alterations Code
Spec.
Alterations Code
Spec.
Reduces the head thickness to less than standard. TC = 0.1mm increments E T/2 ≦ TC ＜ T, T–TC ≦ Lmax.–L (Dimensions L, N and (L–S) remain unchanged)
Single flat cutting D/2 ≦ KC ＜ H/2
0 － 0.05 TC
TC
KC
KC － 0.1 0
4mm
T
About Designation Unit and Tolerance for Key Flat Cutting
JIS (6/8mm)
Reduces the head diameter. HC = 0.1mm increments E D ≦ HC ＜ H
T P Tolerance
T V Tolerance
T V H7 Tolerance V ≦ 3.0 3.1 ≦ V ≦ 6.0 6.1 ≦ V ≦ 10.0 V ≧ 10.1 + 0.010 0 + 0.012 0 + 0.015 0 + 0.018 0
WKC Two flats cutting D/2 ≦ WKC ＜ H/2
Part Number
P
Applicable center pin shaft diameter tolerance
0 － 0.1
HC
WKC
※ Note that for sleeves with V dimension tolerance 0 –0.005 of H7, combination with center pins that have shaft diameter tolerance is not recommended. The reason for this is the fitting sections S are longer. (Details D P.219 )
10mm
E In relation to the diameter tolerance, alteration may create a straight piece with little diameter difference between the head and shaft.
–0.01 –0.02
P ≦ 12.00
Varied width parallel flats cutting D/2 ≦ KAC ＜ H/2 KBC = 0.1mm increments only KAC ＜ KBC ＜ H/2
–0.01 –0.02
ESJF
H7
(1) To align the key flat with the retention diameter Unit of designation 0.05mm increments possible E The tolerance is 0 –0.1 even when D/2 is designated to fit to the retention diameter.
KAC KBC
D(P) –0.01 –0.02
–0.01 –0.03
P ＞ 12.00
－ 0.1 0
－ 0.1 0
Two–step recessing (Makes recess C into two–step and widens it) CW = 0.1mm increments W = 5mm increments E C + 0.5 ≦ CW ≦ Cmax. E CW ≦ 13.5 E 10 ≦ W ≦ L–S–10 E W ≦ N–20, W ≦ 200
KAC
KBC
D(P) 0
–0.005
＋ 5 0
－ 5 0
（
L － S ）
S
CW
Two flats (right angled) cutting D/2 ≦ RKC ＜ H/2
RKC
R ≦ 0.5
RKC － 0.1 0
◎ 0.003
Step R
＋ 5 0
W
◎ 0.005
Performs C chamfering on the tip. CGX = 0.1mm increments E 0.2 ≦ CGX ≦ 1.5 and CGX ≦ P–V 2
DKC Three flats cutting D/2 ≦ DKC ＜ H/2
± 0.05 CGX 45 °
0 － 0.1
◎ 0.01
DKC
DKC
–0.1
CGX
H7 V P
－ 0.05 0
b 2
T
E L–N ≧ 50, Available when L ≦ 300 X Combination with RGX/CGZ/RGZ not available
◎ 0.03
φ 0.06
L
＋ 5 0
Four flats cutting D/2 ≦ SKC ＜ H/2
0 － 5
（ L － N ）
SKC
N
(2) To designate
－ 0.1 SKC 0
＋ 0.02 0
＋ 0.05 0
＋ 0.5 0
arbitrary key flat dimensions Unit of designation 0.1mm
C = designated dimension
◎ 0.06
）
200 < L ≦ 500 L
L > 500
（
Performs R chamfering on the tip. RGX = 0.1mm increments E 0.3 ≦ RGX ≦ 1.5 and RGX ≦ P–V 2
L
L
,
± 0.1
RGX
AG °
± 0.5
Two flats (angled) cutting D/2 ≦ KGC ＜ H/2 AG = 1° increments 0 ＜ AG ＜ 360
SKD61 + Nitrided
M Material h Hardness
RGX
–0.1
0 °
KGC
Standard
Surface: 900HV– Base material: 40 ± 3HRC E Range of guaranteed retention diameter (D) precision (D) (Details D P.221 ) Range of guaranteed base material hardness (Details D P.223 ) R ange of guaranteed surface hardness for nitriding (Details D P.224 ) Step R (Details D P.222 ) E Range of guaranteed tip–diameter precision (b 2 ) (Details D P.222 )
E L–N ≧ 50, Available when L ≦ 300 X Combination with CGX/CGZ/RGZ not available Performs boring C chamfering on the tip. CGZ = 0.1mm increments E 0.2 ≦ CGZ ≦ 1.0 and CGZ ≦ P–V 2 –0.1 E L–N ≧ 50, Available when L ≦ 300 X Combination with CGX/RGX/RGZ not available Performs boring R chamfering on the tip. RGZ = 0.1mm increments E 0.5 ≦ RGZ ≦ 1.0 and RGZ ≦ P–V 2 –0.1 E L–N ≧ 50, Available when L ≦ 300 X Combination with CGX/RGX/CGZ not available
L
KGC
Total Length Designation
120 ° 120 °
Three flats cutting at 120° D/2 ≦ KTC ＜ H/2
－ 0.1 120 ° 0
E Nitriding may extend to the head as it is applied after dimension V and P machining. E Note that the recess diameter (C) ≧ the retention diameter (D) + 1.0 is necessary in order to be able to insert a stepped center pin's retention diameter (D) into the recessed hole (C). (Details D P.220 )
CGZ ± 0.05
Free Designation Shaft Diameter(P) Total Length Designation Shaft Diameter(P)
KTC
CGZ
KTC
45 °
L
Stepped Shape
RGZ ± 0.1
Taper Clearance
RGZ
Part Number
L
V
C
N
S
E P
H T
Cmax.
0.1mm increments
0.01mm increments
0.1mm increments
1mm increments
0.01mm increments
0.1mm increments
L
5mm increments
Type D
Effective Margin(S) Long
20–100
5
2.0 – 3.0 3.50 – 4.95 2.0 – 3.5 3.50 – 5.45 2.0 – 4.0 4.00 – 5.95 2.0 – 4.5 4.00 – 6.45 2.0 – 5.0 4.00 – 6.95 2.0 – 5.5 4.00 – 7.45 2.5 – 6.0 5.00 – 7.95 2.5 – 7.0 6.00 – 8.95
3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.5 8.5
50.00–300.00
9
Short Type
L
(L–S) min.
5.5
50.00–60.00
20 30
C ≧ V + 0.5 and C ≦ P–1.0 ( E When L ＞ 300 0.5mm
6
10
60.01–
6
6.5
N ≧ L 3
50.00–500.00
11
–
7
increments )
7.5
12 13 14 15 17 20 21 25
ESJF
8 9
70.00–500.00
( When L ＞ 600 L 3 ≦ N ≦ 2 3
L )
20–150 (L–)S ≧ 50
10 12 15 16 20
2.5 – 8.0 6.00 – 9.95 C ≧ V + 0.5 and C ≦ P–1.5 ( E When L ＞ 300 0.5mm increments ) 2.5 –10.0 7.50 –11.95 2.5 –12.0 10.00 –14.95 3.0 –13.0 12.00 –15.95 3.0 –16.0 14.50 –19.95
8
10.5 12.5 13.5 17.0
70.00–500.00
500.1–800.0
100.00–500.00
E Limit value of P and V
D
5/5.5
6–7
7.5/8
9–20
L
L ≦ 300
P ≧ V + 1.5
P ≧ V + 1.5
P ≧ V + 1.5
P ≧ V + 2
L ＞ 300 and (L–N–10) ≦ S L ＞ 300 and (L–N–10) ＞ S
P ≧ V + 3
P ≧ V + 4
P ≧ V + 4.5
– –
P ≧ (V + 3) and (P–C)/2 ≧ 0.75
P ≧ (V + 4) and (P + C)/2 ≧ 0.75
P ≧ (V + 4.5) and (P–C)/2 ≧ 0.75
PartNumber– L –V–P–C–N–S ESJF12 – 200.05 – V4.5 – P7.55 – C6.0 – N120 – S85
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