SKD61 + Nitriding Concentricity ◎ 0.06 Head thickness 4mm
STRAIGHT EJECTOR SLEEVES –STANDARD–
Part Number – L – V – (KC/WKC … etc.) ESN8 – 200 – 4.0 – KC4.5
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 2.0 ≦ TC ＜ 4 E Dimensions L and (L–S) become shorter by (4–TC).
Single flat cutting D/2 ≦ KC ＜ H/2
0 － 0.02
KC
TC
TC
KC － 0.1 0
4
4mm
Reduces the head diameter. HC = 0.1mm increments E D ≦ HC ＜ H
JIS (6/8mm)
About Designation Unit and Tolerance for Key Flat Cutting
T V Tolerance
WKC Two flats cutting D/2 ≦ WKC ＜ H/2
Part Number
Applicable center pin shaft diameter tolerance
0 － 0.1
T V H7 Tolerance V ≦ 3.0 3.5 ≦ V ≦ 6.0 6.5 ≦ V ≦ 10.0 V ≧ 11.0 + 0.010 0 + 0.012 0 + 0.015 0 + 0.018 0
HC
WKC
※ 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)
E In relation to the diameter tolerance, alteration may create a straight piece with little diameter difference between the head and shaft.
10mm
–0.01 –0.02
ESN
H7
Varied width parallel flats cutting D/2 ≦ KAC ＜ H/2 KBC = 0.1mm increments only KAC ＜ KBC ＜ H/2
KAC KBC
D(P) –0.01 –0.02
－ 0.1 0
－ 0.1 KBC 0
KAC
(1) To align the key flat with the shaft 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 shaft diameter.
b 1 (Range of Guaranteed Shaft-diameter Precision)
x 1
D(P) 0
–0.005
Two flats (right angled) cutting D/2 ≦ RKC ＜ H/2
RKC
RKC － 0.1 0
◎ 0.003
R ≦ 0.5
◎ 0.005
DKC Three flats cutting D/2 ≦ DKC ＜ H/2
V H7
0 － 0.02 （ L － S ）
T = 4
－ 0.02 － 0.01
0 － 0.1
φ 0.06
D
DKC
DKC
◎ 0.01
0 － 5
S
C = V + 0.5
＋ 5 ＋ 0.1
L
◎ 0.03
Four flats cutting D/2 ≦ SKC ＜ H/2
SKC
－ 0.1 SKC 0
(2) To designate
SKD61 + Nitrided
M Material H Hardness
arbitrary key flat dimensions Unit of designation 0.1mm
◎ 0.06
Surface: 900HV– Base material: 40 ± 3HRC E b 1 (Range of guaranteed shaft diameter precision) (Details D P.221 ) x 1 max. = 30 Range of guaranteed base material hardness (Details D P.223 ) Range of guaranteed surface hardness for nitriding (Details D P.224 )
AG °
± 0.5
Two flats (angled) cutting D/2 ≦ KGC ＜ H/2 AG = 1° increments 0 ＜ AG ＜ 360
0 °
KGC
Standard Standard
L S
75 40
100
125
150
175
200
250
300
KGC
Total Length Designation
50(V1.5 c 40)
60(V1.5 c 40)
60
80
90
120 ° 120 °
Three flats cutting at 120° D/2 ≦ KTC ＜ H/2
－ 0.1 120 ° 0
KTC
E Note that the Stepped Center Pin's shaft diameter (D) is too large to fit in the recess (C). (Details D P.220 )
Free Designation Shaft Diameter(P) Total Length Designation
KTC
Part Number
V Selection
H
L
Type
D
75 100 125 150
1.5
Stepped Shape
4
7
75 100 125 150 175 200
2.0 2.5
Taper Clearance
75 100 125 150
1.5
4.5
75 100 125 150 175 200 75 100 125 150 175 200
2.0 2.5
8
Effective Margin(S) Long
5
2.0 2.5 3.0
Short Type
5.5 75 100 125 150 175 200
2.0 2.5 3.0 3.5 2.5 3.0 3.5 4.0 2.5 3.0 3.5 4.0
9
6
75 100 125 150 175 200 250
6.5 75 100 125 150 175 200 250
10
ESN
7
75 100 125 150 175 200 250
2.5 3.0 3.5 4.0 4.5 5.0
7.5 75 100 125 150 175 200 250
3.0 3.5 4.0 4.5 5.0 4.0 4.5 5.0 5.5 6.0
11
8 9
75 100 125 150 175 200 250
100 125 150 175 200 250 300 6.0 6.5 7.0 100 125 150 175 200 250 300 6.0 7.0 8.0 100 125 150 175 200 250 300 8.0 9.0 100 125 150 175 200 250 300 8.0 10.0 100 125 150 175 200 250 9.0 100 125 150 175 200 250 300 10.0 11.0 12.0
14 15 17
10 12
13
18
16
21
Part Number –
L –
V
Delivery Quotation
Order
– 100 – 4.0
ESN8
253
254
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