SKD61 + Nitriding Concentricity ◎ 0.06 Head thickness 4mm
STRAIGHT EJECTOR SLEEVES –L DIMENSION DESIGNATION TYPE–
Part Number – L – V – (KC/WKC … etc.) ESN–LC8 – 196.25 – 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 2.0 ≦ TC ＜ 4, 4–TC ≦ Lmax.–L (Dimension L remains unchanged) E Z dimension becomes shorter by (4–TC).
Single flat cutting D/2 ≦ KC ＜ H/2
KC
KC － 0.1 0
0 － 0.02
TC
4mm
TC
4
JIS (6/8mm)
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
About Designation Unit and Tolerance for Key Flat Cutting
T V Tolerance
Part Number
Applicable center pin shaft diameter tolerance
WKC Two flats cutting D/2 ≦ WKC ＜ H/2
Reduces the head diameter. HC = 0.1mm increments E D ≦ HC ＜ H
0 － 0.1
※ 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 )
10mm
WKC
HC
–0.01 –0.02
ESN–LC
H7
E In relation to the diameter tolerance, alteration may create a straight piece with little diameter difference between the head and shaft. Performs C chamfering on the tip. CGX = 0.1mm increments E 0.2 ≦ CGX ≦ 1.5 and CGX ≦ –0.1 X Combination with RGX/CGZ/RGZ not available D–V 2 Performs R chamfering on the tip. RGX = 0.1mm increments E 0.3 ≦ RGX ≦ 1.5 and RGX ≦ 2 –0.1 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 ≦ D–V 2 –0.1 X Combination with CGX/RGX/RGZ not available D–V Performs boring R chamfering on the tip. RGZ = 0.1mm increments E 0.5 ≦ RGZ ≦ 1.0 and RGZ ≦ D–V 2 –0.1 X Combination with CGX/RGX/CGZ not available
Varied width parallel flats cutting D/2 ≦ KAC ＜ H/2 KBC = 0.1mm increments only KAC ＜ KBC ＜ H/2
D(P) –0.01 –0.02
KAC KBC
－ 0.1 0
－ 0.1 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.
KAC
KBC
x 1
b 1 (Range of Guaranteed Shaft-diameter Precision)
D(P) 0
± 0.05 CGX 45 °
–0.005
CGX
Two flats (right angled) cutting D/2 ≦ RKC ＜ H/2
RKC
◎ 0.003
RKC － 0.1 0
L
◎ 0.005
± 0.1
RGX
R ≦ 0.5
DKC Three flats cutting D/2 ≦ DKC ＜ H/2
V H7
RGX
◎ 0.01
0 － 0.1
－ 0.02 － 0.01
0 － 0.02
T = 4
DKC
DKC
D
φ 0.06
L
0 － 5
Z
S
◎ 0.03
＋ 0.02
＋ 0.05 0
Four flats cutting D/2 ≦ SKC ＜ H/2
）
0 （ L > 200
SKC
(2) To designate
L
L
C = V + 0.5
CGZ ± 0.05
－ 0.1 SKC 0
arbitrary key flat dimensions Unit of designation 0.1mm
◎ 0.06
CGZ
45 °
SKD61 + Nitrided
AG °
± 0.5
M Material H Hardness
Two flats (angled) cutting D/2 ≦ KGC ＜ H/2 AG = 1° increments 0 ＜ AG ＜ 360
L
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
0 °
E S dimension depends on the designated L dimension. S = L–Z L 50.00– 75.00 75.01– 100.00 100.01– 125.00
KGC
KGC
RGZ ± 0.1
Total Length Designation
125.01– 150.00
150.01– 175.00
175.01– 200.00
200.01– 250.00
250.01– 300.00
120 ° 120 °
RGZ
Three flats cutting at 120° D/2 ≦ KTC ＜ H/2
－ 0.1 120 ° 0
Free Designation Shaft Diameter(P) Total Length Designation
KTC
Z
35 50(V1.5 c 60) 75(V1.5 c 85) 90(V1.5 c 110)
115
120
170
210
L
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 )
Part Number
L 0.01mm increments
V Selection
Stepped Shape
H
Type
D
Taper Clearance
50.00–150.00
1.5
4
7
50.00–200.00
2.0 2.5
Effective Margin(S) Long
50.00–150.00
1.5
4.5
Short Type
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
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
ESN–LC
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
12
80.00–300.00
8.0 9.0
17
13
80.00–300.00
8.0 9.0 10.0
18
16
80.00–300.00
10.0 11.0 12.0
21
E For L dimension less than 50mm, please use Short Ejector Sleeves ECB/ECBB. (Only for D4/5/6/7/8/10) D P.267 Delivery Quotation Order Part Number – L – V ESN–LC8 – 123.65 – V4.0
257
258
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