SKD61 + Nitriding Concentricity ◎ 0.06 Head thickness JIS
STRAIGHT EJECTOR SLEEVES –STANDARD–
Part Number – L – V – (KC/WKC … etc.) ESJ8 – 200 – 4 – KC4.0
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 T/2 ≦ TC ＜ T E D imensions L and (L–S) become shorter by (T–TC).
Single flat cutting D/2 ≦ KC ＜ H/2
0 － 0.05
TC
KC
TC
KC － 0.1 0
4
4mm
Reduces the head diameter. HC = 0.1mm increments E D ≦ HC ＜ H
About Designation Unit and Tolerance for Key Flat Cutting
JIS (6/8mm)
WKC Two flats cutting D/2 ≦ WKC ＜ H/2
T D Tolerance D ≦ 12 –0.01 –0.03 T V H7 Tolerance V ≦ 3 D ≧ 15 –0.01 –0.02
T V Tolerance
0 － 0.1
Part Number
Applicable center pin shaft diameter tolerance
HC
WKC
E In relation to the diameter tolerance, alteration may create a straight piece with little diameter difference between the head and shaft.
10mm
※ 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 = 0.1mm increments only KAC ＜ KBC ＜ H/2
KAC KBC
–0.01 –0.02
ESJ
H7
D(P) –0.01 –0.02
－ 0.1 0
－ 0.1 0
(1) To align the key flat with the shaft diameter Unit of designation 0.05mm increments possible
KAC
KBC
3.5 ≦ V ≦ 6 6.5 ≦ V ≦ 10 V ≧ 12
+ 0.010 0
+ 0.012 0
+ 0.015 0
+ 0.018 0
D(P) 0
x 1
b 1 (Range of Guaranteed Shaft-diameter Precision)
–0.005
Two flats (right angled) cutting D/2 ≦ RKC ＜ H/2
RKC
RKC － 0.1 0
◎ 0.003
0 –0.1
E The tolerance is
◎ 0.005
even when D/2 is designated to fit to the shaft diameter.
DKC Three flats cutting D/2 ≦ DKC ＜ H/2
0 － 0.1
R ≦ 0.5
DKC
DKC
H7 V D
◎ 0.01
φ 0.06
－ 0.05 0
T
Four flats cutting D/2 ≦ SKC ＜ H/2
◎ 0.03
0 － 5
（ L － S ）
SKC
S
(2) To designate
－ 0.1 SKC 0
＋ 0.1 L ＋ 5
arbitrary key flat dimensions Unit of designation 0.1mm
C = V + 0.5
◎ 0.06
SKD61 + Nitrided
AG °
M Material H Hardness
± 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. = 35 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 100 120 140 160 180 200 225 250 275 300 325 350 375 400 425 450 475 500 S 50(V1.5 c 40) 75 100 115 150 E Note that the Stepped Center Pin's shaft diameter (D) is too large to fit in the recess (C). (Details D P.220 )
Total Length Designation
120 ° 120 °
Three flats cutting at 120° D/2 ≦ KTC ＜ H/2
－ 0.1 120 ° 0
KTC
Free Designation Shaft Diameter(P) Total Length Designation
KTC
Part Number
V Selection
H T
L
Type D
Stepped Shape
100 120 140
1.5
4
Taper Clearance
100 120 140 160 180 200
2 2.5
8
100 120 140
1.5
4.5
100 120 140 160 180 200 100 120 140 160 180 200 225
2 2.5
Effective Margin(S) Long
2 2.5 3
5
250 275 300
3
Short Type
9
100 120 140 160 180 200 225
2 2.5 3
5.5
250 275 300
3
6
6 100 120 140 160 180 200 225 250 275 300
2 2.53 3.5 4
10
325 350 375 400 425 450
3 3.5
6.5 100 120 140 160 180 200 225 250 275 300
2 2.53 3.5 4
325 350 375 400 425 450
3 3.5 4
11
7 100 120 140 160 180 200 225 250 275 300
2 2.5 3 3.5 4 4.5
325 350 375 400 425 450
3 3.5 4 4.5 3 3.5 4 4.5
ESJ
7.5 100 120 140 160 180 200 225 250 275 300
12
325 350 375
3.5 4 4.5
2 2.5 3 3.5 4 4.5 5 5.5
8 100 120 140 160 180 200 225 250 275 300
13
325 350 375 400 425 450
3 3.54 4.5 5
475 500 5
2 2.5 3 3.5 4 4.5 5 5.5
9 100 120 140 160 180 200 225 250 275 300
14
325 350 375 400 425 450
3 3.54 4.5 5
475 500 5 5.56
8
10 100 120 140 160 180 200 225 250 275 300 325 350 375 400 425 450
4 4.55 5.5 6 6.5 7
15
475 500 5 5.56 6.5 7
12 100 120 140 160 180 200 225 250 275 300 325 350 375 400 425 450
4 4.55 5.5 6 6.5 7 8 8.5
17
475 500 5 5.56 6.5 7 8
20 25
15 20
200 225 250 275 300 325 350 375 400 425 450 475 500 910 200 225 250 275 300 325 350 375 400 425 450 475 500 12 15
Part Number – L – V ESJ6.5 – 120 – 2.5
Delivery Quotation
Order
255
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