SKD61 + Nitriding Concentricity ◎ 0.03 Head thickness 4mm
STRAIGHT EJECTOR SLEEVES –STANDARD–
Part Number – L – V – (KC/WKC … etc.) ESNV8 – 100 – 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
KC
0 － 0.02
TC
KC － 0.1 0
TC
4mm 4mm
4
Reduces the head diameter. HC = 0.1mm increments E D ≦ HC ＜ H
JIS (6/8mm)
WKC Two flats cutting D/2 ≦ WKC ＜ H/2
Part Number
T V Tolerance
Applicable center pin shaft diameter tolerance
T VH7 Tolerance V ≦ 3.0 3.5 ≦ V ≦ 6.0
0 － 0.1
About Designation Unit and Tolerance for Key Flat Cutting
WKC
HC
※ 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 )
V ≧ 6.5
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
ESNV
H7
Varied width parallel flats cutting D/2 ≦ KAC ＜ H/2 KBC = 0.1mm increments only KAC ＜ KBC ＜ H/2
+ 0.010 0
+ 0.012 0
+ 0.015 0
KAC KBC
－ 0.1 0
－ 0.1 0
D(P) –0.01 –0.02
KAC
KBC
x 1
b 1 (Range of Guaranteed Shaft-diameter Precision)
D(P) 0
(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.
–0.005
Two flats (right angled) cutting D/2 ≦ RKC ＜ H/2
RKC
RKC － 0.1 0
◎ 0.003
◎ 0.005
DKC Three flats cutting D/2 ≦ DKC ＜ H/2
R ≦ 0.5
V H7
0 － 0.1
－ 0.02 － 0.01
φ 0.03
DKC
DKC
0 － 0.02
T = 4
D
◎ 0.01
－ 5 0
（ L － S ）
S
C = V + 0.5
Four flats cutting D/2 ≦ SKC ＜ H/2
◎ 0.03
＋ 5 ＋ 0.1
SKC
L
－ 0.1 SKC 0
(2) To designate arbitrary key flat dimensions Unit of designation 0.1mm
SKD61 + Nitrided
M Material H Hardness
◎ 0.06
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 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 )
0 °
KGC
Standard Standard
KGC
L S
75
100 125
150
175 200 225 250 275 300
120 ° 120 °
Total Length Designation
Three flats cutting at 120° D/2 ≦ KTC ＜ H/2
40)60(V1.5 40)
60
80
90
40 50(V1.5
－ 0.1 120 ° 0
KTC
Free Designation Shaft Diameter(P) Total Length Designation
E Note that the Stepped Center Pin's shaft diameter (D) is too large to fit in the recess (C). (Details D P.220 )
KTC
Part Number
V Selection
H
L
Stepped Shape
Type
D
75 100 125 150
1.5
Taper Clearance
4
7
75 100 125 150 175 200
2.0 2.5
Effective Margin(S) Long
75 100 125 150
1.5
4.5
Short Type
75 100 125 150 175 200
2.0 2.5
8
5 75 100 125 150 175 200
2.0 2.5 3.0
5.5 75 100 125 150 175 200
2.0 2.5 3.0 3.5
9
ESNV
6 75 100 125 150 175 200 225 250
2.5 3.0 3.5 4.0
6.5 75 100 125 150 175 200 225 250
2.5 3.0 3.5 4.0
10
7 75 100 125 150 175 200 225 250
2.5 3.0 3.5 4.0 4.5 5.0
7.5 75 100 125 150 175 200 225 250
3.0 3.5 4.0 4.5 5.0
11
8 75 100 125 150 175 200 225 250
4.0 4.5 5.0 5.5 6.0
9
100 125 150 175 200 225 250 275 300 6.0 6.5 7.0
14
10
100 125 150 175 200 225 250 275 300 6.0 7.0 8.0
15
Part Number – L – V ESNV8 – 100 – 4.0
Order
Delivery Quotation
245
246
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