SKD61 + Nitriding Concentricity ◎ 0.03 Head thickness 4mm
STRAIGHT EJECTOR SLEEVES –L DIMENSION DESIGNATION TYPE–
Part Number – L – V – (KC/WKC ... etc.) ESNV–LC8 – 123.65 – V4.0 – 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 4–TC ≦ Lmax.–L E 2.0 ≦ TC ＜ 4 (Dimensions L and (L–S) remain unchanged)
Single flat cutting D/2 ≦ KC ＜ H/2
KC
KC － 0.1 0
4mm
0 － 0.02
TC
TC
JIS (6/8mm)
4
Part Number
T V Tolerance
Applicable center pin shaft diameter tolerance
About Designation Unit and Tolerance for Key Flat Cutting
T V H7 Tolerance V ≦ 3.0 3.5 ≦ V ≦ 6.0
※ 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 )
Two flats cutting D/2 ≦ WKC ＜ H/2
WKC
10mm
0 － 0.1
–0.01 –0.02
Reduces the head diameter. HC = 0.1mm increments E D ≦ HC ＜ H
WKC
ESNV–LC
V ≧ 6.5
H7
+ 0.010 0
+ 0.012 0
+ 0.015 0
D(P) –0.01 –0.02
HC
Varied width parallel flats cutting D/2 ≦ KAC ＜ H/2 KBC = 0.1mm increments only KAC ＜ KBC ＜ H/2
E In relation to the diameter tolerance, alteration may create a straight piece with little diameter difference between the head and shaft.
KAC KBC
(1) To align the key flat with the shaft diameter Unit of designation 0.05mm increments possible
x 1
b 1
D(P) 0
(Range of Guaranteed Shaft-diameter Precision)
－ 0.1 0
－ 0.1 0
KAC
KBC
–0.005
◎ 0.003
Two flats (right angled) cutting D/2 ≦ RKC ＜ H/2
RKC
◎ 0.005
RKC － 0.1 0
0 –0.1
E The tolerance is
R ≦ 0.5
V H7
even when D/2 is designated to fit to the shaft diameter.
◎ 0.01
－ 0.02 － 0.01
φ 0.03
0 － 0.02
T = 4
D
Three flats cutting D/2 ≦ DKC ＜ H/2
－ 5 0
DKC
（ L － S ）
S
◎ 0.03
0 － 0.1
C = V + 0.5
DKC
DKC
＋ 0.02
＋ 0.05 0
）
0 （ L > 200
L
L
(2) To designate arbitrary key flat dimensions Unit of designation 0.1mm
◎ 0.06
SKD61 + Nitrided
M Material H Hardness
Four flats cutting D/2 ≦ SKC ＜ H/2
SKC
－ 0.1 SKC 0
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 )
Standard
Total Length Designation
AG °
± 0.5
Two flats (angled) cutting D/2 ≦ KGC ＜ H/2 AG=1° increments 0 ＜ AG ＜ 360
50.00– 75.00
75.01– 100.00
100.01– 125.00
125.01– 150.00
150.01– 175.00
175.01– 200.00
200.01– 225.00
225.01– 250.00
250.01– 275.00
275.01– 300.00
L
0 °
KGC
Free Designation Shaft Diameter(P) Total Length Designation
(L–S)
35 50(V1.5 60) 75(V1.5 85) 90(V1.5 110)
115
120
145
170
185
210
KGC
E Note that the Stepped Center Pin's shaft diameter (D) is too large to fit in the recess (C). (Details D P.220 )
120 ° 120 °
Three flats cutting at 120° D/2 ≦ KTC ＜ H/2
－ 0.1 120 ° 0
KTC
Stepped Shape
Part Number
L 0.01mm increments
V Selection
KTC
H
Type
D
Taper Clearance
50.00–150.00
1.5
4
7
Effective Margin(S) Long
50.00–200.00
2.0 2.5
50.00–150.00
1.5
Short Type
4.5
50.00–200.00
2.0 2.5
8
5
50.00–200.00
2.0 2.5 3.0
5.5
50.00–200.00
2.0 2.5 3.0 3.5
9
ESNV–LC
6
50.00–250.00
2.5 3.0 3.5 4.0
6.5
50.00–250.00
2.5 3.0 3.5 4.0
10
7
50.00–250.00
2.5 3.0 3.5 4.0 4.5 5.0
7.5
50.00–250.00
3.0 3.5 4.0 4.5 5.0
11
8
50.00–250.00
4.0 4.5 5.0 5.5 6.0
9
80.00–300.00
6.0 6.5 7.0
14
10
80.00–300.00
6.0 7.0 8.0
15
Part Number – L – V ESNV-LC8 – 123.65 – V4.0
Order
Quotation
Delivery
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