SKD61 + Nitriding Concentricity ◎ 0.06 Head thickness 4mm
STRAIGHT EJECTOR SLEEVES –SHAFT DIAMETER SELECTION TYPE / SHAFT DIAMETER DESIGNATION TYPE–
High Speed Steel SKH51 Die Steel SKD61 + Nitriding
Delivery Quotation
Part Number – L – P – V – C – S – (KC/WKC ... etc.) ESN–L8 – 200.05 – V4.1 – C4.6 – S32 – KC4.5 ESNB 8 – 150.00 – P7.55 – V4.0 – C5.0 – S32 – KC3.775
Alterations
4mm
Alteration details D P.225
Part Number
JIS (6/8mm)
Alterations Code
Spec.
Alterations Code
Spec.
T D/P Tolerance T V Tolerance
Applicable center pin shaft diameter tolerance
Shaft diameter designation (0.01mm increments) type
Shaft diameter selection type
T V H7 Tolerance V ≦ 3.0
Reduces the head thickness to less than standard. TC = 0.1mm increments E 2.0 ≦ TC ＜ 4, 4–TC ≦ Lmax.–L (Dimensions L and (L–S) remain unchanged)
※ Note that for sleeves with V dimension tolerance of H7, combination with center pins that have shaft diameter tolerance 0 –0.005 is not recom- mended. The reason for this is the fitting sections S are longer. (Details D P.219 )
10mm
Single flat cutting (D or P)/2 ≦ KC ＜ H/2
0 － 0.02
KC
TC
3.1 ≦ V ≦ 6.0 6.1 ≦ V ≦ 10.0
V ≧ 10.1 + 0.018 0
–0.01 –0.02
-0.01 -0.02
TC
KC － 0.1 0
ESN–L
ESNB
H7
+ 0.010 0
+ 0.012 0
+ 0.015 0
4
D(P) –0.01 –0.02
Reduces the head diameter. HC = 0.1mm increments E (D or P) ≦ HC < H
About Designation Unit and Tolerance for Key Flat Cutting
x 1
b 1
(Range of Guaranteed Shaft-diameter Precision)
WKC Two flats cutting
D(P) 0
(D or P)/2 ≦ WKC ＜ H/2
–0.005
0 － 0.1
HC
WKC
E In relation to the diameter tolerance, alteration may create a straight piece with little diameter difference between the head and shaft.
◎ 0.003
Varied width parallel flats cutting (D or P)/2 ≦ KAC ＜ H/2 KBC = 0.1mm increments only KAC ＜ KBC ＜ H/2
KAC KBC
－ 0.1 0
－ 0.1 0
◎ 0.005
Two-step recessing (Makes recess C into two-step and widens it) CW = 0.1mm increments W = 5mm increments E C + 0.5 ≦ CW ≦ Cmax., CW ≦ P–1.5 E 10 ≦ W ≦ L–S–10, W ≦ 200 Performs C chamfering on the tip. CGX = 0.1 mm increments E 0.2 ≦ CGX ≦ 1.5 and CGX ≦ –0.1 X Combination with RGX/CGZ/RGZ not available D(P)–V 2 Performs R chamfering on the tip. RGX = 0.1 mm increments E 0.3 ≦ RGX ≦ 1.5 and RGX ≦ –0.1 X Combination with CGX/CGZ/RGZ not available D(P)–V 2 Performs boring C chamfering on the tip. CGZ = 0.1 mm increments E 0.2 ≦ CGZ ≦ 1.0 and CGZ ≦ D(P)–V 2 –0.1 X Combination with CGX/RGX/RGZ not available Performs boring R chamfering on the tip. RGZ=0.1 mm increments E 0.5 ≦ RGZ ≦ 1.0 and RGZ ≦ D(P)–V 2 –0.1 X Combination with CGX/RGX/CGZ not available
(1) To align the key flat with the shaft diameter Unit of designation Shaft diameter (D) selection 0.05mm increments possible Shaft diameter (P) designation 0.005mm increments possible
KAC
KBC
R ≦ 0.5
V H7
φ 0.06
0 － 0.02
T = 4
◎ 0.01
D or P Shaft diameter
CW
S 0 ＋ 5
－ 5 0
（ L － S ）
Two flats (right angled) cutting (D or P)/2 ≦ RKC ＜ H/2
RKC
＋ 5 0
C=designated dimension
◎ 0.03
＋ 0.02
W
＋ 0.05 0
RKC － 0.1 0
）
0 （ L > 200
L
L
SKD61 + Nitrided
M Material H Hardness
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 )
± 0.05 CGX 45 °
◎ 0.06
0 –0.1
E Nitriding may extend to the head as it is applied after dimension V and P machining. E To insert a stepped center pin with the retention diameter (D) into recess diameter (C) the recess diameter (C) ≧ the retention diameter (D) + 1.0 the following condition must be met: (Details D P.220 )
E The tolerance is
CGX
DKC Three flats cutting
even when (D or P)/2 is designated to fit to the shaft diameter.
(D or P)/2 ≦ DKC ＜ H/2
0 － 0.1
Standard
DKC
DKC
L
± 0.1
RGX
■ Shaft diameter (D) selection type
Total Length Designation
RGX
Four flats cutting (D or P)/2 ≦ SKC ＜ H/2
0 SKC
Part Number
L 0.01mm increments
V 0.1mm increments
C 0.1mm increments
S 1mm increments
Free Designation Shaft Diameter(P) Total Length Designation
H
Cmax.
L
－ 0.1 SKC
( 2) To designate arbitrary key flat dimensions Unit of designation 0.1mm
Type
D
4
40.00–200.00
1.5 – 2.5
7
CGZ ± 0.05
3.0
AG °
± 0.5
Two flats (angled) cutting (D or P)/2 ≦ KGC ＜ H/2 AG = 1° increments 0 ＜ AG ＜ 360
1.5 – 2.5 ＊ 2.6 – 3.0 1.5 – 3.0 ＊ 3.1 – 3.5 1.5 – 3.5 ＊ 3.6 – 4.0 2.0 – 4.0 ＊ 4.1 – 4.5
4.5
CGZ
0 °
3.5 3.5 4.0 4.0 4.5 4.5 5.0 5.0 5.5 6.0 6.5 7.5 8.5
KGC
40.00–250.00
20–100 ( E When D4-D5.5, V1.5-V1.9 20–40 )
45 °
8
L
Stepped Shape
KGC
5
When V dimension ＊ 40.00–150.00
RGZ ± 0.1
120 ° 120 °
Taper Clearance
5.5
Three flats cutting at 120° (D or P)/2 ≦ KTC ＜ H/2
RGZ
－ 0.1 120 ° 0
KTC
9
6
Effective Margin(S) Long
L
KTC
L
(L–S) min.
40.00–60.00
20 30
6.5
2.0 – 4.5 2.0 – 5.0 2.0 – 5.5 2.5 – 6.0 2.5 – 7.0 2.5 – 8.0 2.5 –10.0 2.5 –11.0 2.5 –13.0 3.0 –16.0
C ≧ V + 0.5
ESN–L
10
60.01–
7
Short Type
7.5
40.00–300.00
11
8 9
14 15 17 18 21 25
When V dimension ＊ 40.00–150.00
20–100
10 12 13 16 20
L
(L–S) min.
10.5 11.5 13.5 16.5
40.00–60.00 60.01–70.00 70.01–80.00
20 30 40 50
80.01–
■ Shaft diameter (P) designation 0.01mm increments type
L 0.01mm increments
P 0.01mm increments
Part Number
C 0.1mm increments
S 1mm increments 20–100 ( E When No.4, V1.5-V1.9 20–40 )
e V 0.1mm increments
H
Cmax.
Type
No.
4 5
40.00–200.00 3.50— 3.99
1.5— 1.9 2.0— 2.5 2.0— 3.4 2.0— 3.9 2.0— 4.4 2.0— 4.9 2.0— 5.4 2.5— 5.9 2.5— 6.9 2.5— 7.9 2.5—10.9 2.5—13.0 3.0—16.0
2.5 3.0 4.0 4.5 5.0 5.5 6.0 6.5 7.5 8.5
7 8
4.01— 4.99 5.01— 5.49 5.51— 5.99 6.01— 6.49 6.51— 6.99 7.01— 7.49 7.51— 7.99 8.01— 8.99 9.01— 9.99 10.01—12.99 13.01—15.99 16.01—19.99
40.00–250.00
5.5
9
6
6.5
C ≧ V + 0.5 and C ≦ P–1.5
L
(L–S) min.
10
7
40.00–60.00
20 30
ESNB
60.01–
7.5
11
8 9
20–100
40.00–300.00
14 15 18 21 25
L
(L–S) min.
10 13 16 20
40.00–60.00 60.01–70.00 70.01–80.00
20 30 40 50
11.5 13.5 16.5
80.01–
e V ≦ P–2.0
Part Number
–L–P–V–C–S
Order
– V4.1 – C5.0 – S32
(D selection type) ESN–L8 (P selection type) ESNB8
– 200.05
261
262
– 200.05 – P7.55 – V4.1 – C5.0 – S32
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