SKD61 + Nitriding Concentricity ◎ 0.06 Head thickness 4mm
STEPPED EJECTOR SLEEVE
PartNumber – L – V – P – C – N – S – (KC/WKC … etc.) ESNF6 – 150.00 – V2.5 – P5.50 – C3.1 – 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 = 0.1 mm increments E 2.0 ≦ TC ＜ 4.0 ， 4–TC ≦ Lmax.–L (Dimensions L, N and (L–S) remain unchanged)
Single flat cutting D/2 ≦ KC ＜ H/2
0 － 0.02 TC
TC
KC
KC － 0.1 0
4mm
4
About Designation Unit and Tolerance for Key Flat Cutting
JIS (6/8mm)
Reduces the head diameter. HC = 0.1 mm increments E D ≦ HC ＜ H
WKC Two flats cutting D/2 ≦ WKC ＜ H/2
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
Part Number
Applicable center pin shaft diameter tolerance
0 － 0.1
HC
WKC
10mm
E In relation to the diameter tolerance, alteration may create a straight piece with little diameter difference between the head and shaft. Two–step recessing (Makes recess C into two–step and widens it) CW = 0.1 mm increments W = 5 mm increments E C + 0.5 ≦ CW ≦ Cmax. Performs C chamfering on the tip. CGX = 0.1 mm increments E 0.2 ≦ CGX ≦ 1.5 and CGX ≦ P–V 2 E Available when L–N ≧ 50 X Combination with RGX/CGZ/RGZ not available E 10 ≦ W ≦ L–S–10 E W ≦ N–20,W ≦ 200 –0.1 Performs R chamfering on the tip. RGX = 0.1 mm increments E 0.3 ≦ RGX ≦ 1.5 and RGX ≦ P–V 2 E Available when L–N ≧ 50 X Combination with CGX/CGZ/RGZ not available –0.1 Performs boring C chamfering on the tip. CGZ = 0.1 mm increments E 0.2 ≦ CGZ ≦ 1.0 and CGZ ≦ P–V 2 –0.1 E Available when L–N ≧ 50 X Combination with CGX/RGX/RGZ not available Performs boring R chamfering on the tip. RGZ = 0.1 mm increments E 0.5 ≦ RGZ ≦ 1.0 and RGZ ≦ P–V 2 –0.1 E Available when L–N ≧ 50 X Combination with CGX/RGX/CGZ not available
※ Note that for sleeves with V dimension tolerance of H7, combination with center pins that have shaft diameter tolerance 0 –0.005 is not recommended. The reason for this is the fitting sections S are longer. (Details D P.219 )
Varied width parallel flats cutting D/2 ≦ KAC ＜ H/2 KBC = 0.1 mm increments only KAC ＜ KBC ＜ H/2
–0.01 –0.02
–0.01 –0.02
ESNF
H7
KAC KBC
(1) To align the key flat with the retention diameter Unit of designation 0.05 mm increments possible E The tolerance is 0 –0.1 even when D/2 is designated to fit to the retention diameter.
D(P) –0.01 –0.02
－ 0.1 0
－ 0.1 0
KAC
KBC
＋ 5 0
D(P) 0
－ 5 0
（
L － S ）
S
–0.005
CW
Two flats (right angled) cutting D/2 ≦ RKC ＜ H/2
R ≦ 0.5
RKC
Step R
RKC － 0.1 0
◎ 0.003
＋ 5 0
W
◎ 0.005
DKC Three flats cutting D/2 ≦ DKC ＜ H/2
± 0.05 CGX 45 °
0 － 0.1
◎ 0.01
DKC
DKC
CGX
V
H7
－ 0.02 0
T = 4
b 2
－ 0.01 － 0.02
φ 0.06
P
L
◎ 0.03
＋ 5 0
0 － 5
（ L － N ）
Four flats cutting D/2 ≦ SKC ＜ H/2
N
SKC
(2) To designate
－ 0.1 SKC 0
C = designated dimension
＋ 0.02
＋ 0.05 0
）
0 （ L > 200
± 0.1
L
L
RGX
arbitrary key flat dimensions Unit of designation 0.1 mm
◎ 0.06
RGX
SKD61 + Nitrided
M Material H Hardness
AG °
± 0.5
Two flats (angled) cutting D/2 ≦ KGC ＜ H/2 AG = 1° increments 0 ＜ AG ＜ 360
Surface: 900HV– Base material: 40 ± 3HRC E Range of guaranteed retention diameter (D) precision (D) (Details D P.221 ) R ange of guaranteed base material hardness (Details D P.223 ) Range 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 )
0 °
L
KGC
Standard
KGC
Total Length Designation
CGZ ± 0.05
120 ° 120 °
Three flats cutting at 120° D/2 ≦ KTC ＜ H/2
CGZ
－ 0.1 120 ° 0
KTC
Free Designation Shaft Diameter(P) Total Length Designation Shaft Diameter(P)
45 °
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 )
L
KTC
RGZ ± 0.1
RGZ
Stepped Shape
1 mm increments
Part Number
L 0.01 mm increments
V 0.1 mm increments
C 0.1 mm increments
E P 0.01 mm increments
L
H
Cmax.
Taper Clearance
Type
D
N
S
4
1.5 – 2.0 3.00 – 3.95 2.0 – 2.5 3.50 – 4.45 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 4.00 – 7.95 2.5 – 6.9 4.50 – 8.95
7
2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.5 8.5
Effective Margin(S) Long
50.00–200.00
4.5
20–100 E When D=4
8
Short Type
5
50.00–250.00
L 3
(V1.5-V1.9) 20–50
5.5
N ≧
9
C ≧ V + 0.5 and C ≦ P–1.0
6
L
(L–S) min.
6.5
50.00–60.00
20 30
10
60.01–
ESNF
7
and
7.5
11
50.00–300.00
8 9
20–100
14 15 18
(L–N) ≧ 10
L
(L–S) min.
50.00–60.00 60.01–70.00 70.01–80.00
20 30 40 50
10 13 16
2.5 – 7.9 4.50 – 9.95 C ≧ V + 0.5 and C ≦ P–1.5 2.5 –10.9 5.00 –12.95 2.5 –13.0 7.00 –15.95
11.5 14.5
80.01–
21
E Machining limit of P D = 4–8 c P ≧ V + 1.5, D = 9–16 c P ≧ V + 2.0
PartNumber– L –V–P–C–N–S ESNF8 – 200.05 – V4.0 – P7.05 – C4.5 – N120 – S85
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Delivery
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