SKD61 + Nitriding Concentricity ◎ 0.06 Head thickness JIS
STRAIGHT EJECTOR SLEEVES –SHAFT DIAMETER SELECTION TYPE / SHAFT DIAMETER DESIGNATION TYPE–
High Speed Steel SKH51 Die Steel SKD61 + Nitriding
Quotation
Delivery
Part Number – L – P – V – C – S – (KC/WKC ... etc.) ESNJ8 – 200.05 – V4.0 – C5.0 – S32 – KC4.5 ESJB8 – 200.05 – P7.55 – V5.0 – C5.5 – S40 – HC11.5
Alterations
4mm
JIS (6/8mm)
Part Number
Alteration details D P.225
T D/P Tolerance
T V Tolerance
Applicable center pin shaft diameter tolerance
Shaft diameter des- ignation (0.01mm increments) type
D or P
Shaft diameter selection type
Alterations Code
Spec.
Alterations Code
Spec.
T V H7 Tolerance V ≦ 3.0
10mm
–0.01 –0.02 –0.01 –0.03
※ 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 )
D or P ≦ 12.00
Reduces the head thickness to less than standard. TC = 0.1mm increments E T/2 ≦ TC ＜ T, T–TC ≦ Lmax.–L (Dimensions L, (L–S) remain unchanged)
3.1 ≦ V ≦ 6.0 6.1 ≦ V ≦ 10.0
V ≧ 10.1
–0.01 –0.02
ESNJ
ESJB
H7
Single flat cutting (D or P)/2 ≦ KC ＜ H/2
D(P) –0.01 –0.02
0 － 0.05 TC
+0.010 0
+0.012 0
+0.015 0
+0.018 0
TC
KC
D or P > 12.00
KC － 0.1 0
About Designation Unit and Tolerance for Key Flat Cutting
T
x 1
D(P) 0
b 1
(Range of Guaranteed Shaft-diameter Precision)
–0.005
Reduces the head diameter. HC = 0.1mm increments E (D or P) ≦ HC ＜ H
Two flats cutting (D or P)/2 ≦ WKC ＜ H/2
WKC
◎ 0.003
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.
◎ 0.005
R ≦ 0.5
V D or P Shaft diameter H7
Varied width parallel flats cutting (D or P)/2 ≦ KAC ＜ H/2 KBC = 0.1mm increments only KAC ＜ KBC ＜ H/2
(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 E The tolerance is 0 –0.1 even when (D or
Two-step recessing (Makes recess C into two-step and widens it) CW = 0.1mm increments W = 5mm increments E C + 0.5 ≦ CW ≦ C max. E CW ≦ 13.5 E 10 ≦ W ≦ L–S–10, W ≦ 200
0 － 0.05
KAC KBC
T
◎ 0.01
φ 0.06
－ 0.1 0
－ 0.1 0
S 0 ＋ 5
KAC
－ 5 0
KBC
（ L － S ）
CW
◎ 0.03
＋ 0.02 0
＋ 0.05 0
＋ 0.5 0
C=designated dimension
）
（
200 < L ≦ 500 L
L > 500
L
L
,
＋ 5 0
W
◎ 0.06
SKD61 + Nitrided
M Material h Hardness
Two flats (right angled) cutting (D or P)/2 ≦ RKC ＜ H/2
RKC
Performs C chamfering on the tip. CGX = 0.1mm increments E 0.2 ≦ CGX ≦ 1.5 and CGX ≦
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 )
RKC － 0.1 0
± 0.05 CGX 45 °
D(P)–V
Standard
CGX
2 –0.1
P)/2 is designated to fit to the shaft diameter.
E Available when L ≦ 300 X Combination with RGX/CGZ/RGZ not available
E Nitriding may extend to the head as it is applied after dimension V/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 )
L
Total Length Designation
Three flats cutting (D or P)/2 ≦ DKC ＜ H/2
DKC
0 － 0.1
Performs R chamfering on the tip. RGX = 0.1mm increments E 0.3 ≦ RGX ≦ 1.5 and RGX ≦
DKC
DKC
Free Designation Shaft Diameter(P) Total Length Designation
± 0.1
RGX
■ Shaft Diameter (D) Selection Type
D(P)–V
RGX
2 –0.1
E Available when L ≦ 300 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(P)–V E Available when L ≦ 300 X Combination with CGX/RGX/RGZ not available 2 –0.1 Performs boring R chamfering on the tip. RGZ = 0.1mm increments E 0.5 ≦ RGZ ≦ 1.0 and RGZ ≦ D(P)–V 2 E Available when L ≦ 300 X Combination with CGX/RGX/CGZ not available –0.1
V 0.1mm increments
C 0.1mm increments
(2) To designate arbitrary key flat dimensions Unit of designation 0.1mm
L
Four flats cutting (D or P)/2 ≦ SKC ＜ H/2
Part Number
L
S 1mm increments
SKC
H T
Cmax.
－ 0.1 SKC 0
Type
D 0.01mm increments 0.1mm increments
Stepped Shape
CGZ ± 0.05
4
40.00–200.00 40.00–250.00
( E When D4/D4.5 V1.5–V1.9 20—40 ) L (L–S) min. 40.00–60.00 20 60.01– 30 20–100
1.5 – 2.5
8
3.0
AG °
± 0.5
CGZ
4.5
Two flats (angled) cutting (D or P)/2 ≦ KGC ＜ H/2 AG=1° increments 0 ＜ AG ＜ 360
Taper Clearance
45 °
5
2.0 – 3.0 2.0 – 3.5 2.0 – 4.0 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 –12.0 3.0 –13.0 3.0 –16.0
3.5
0 °
L
KGC
40.00–300.00
9
5.5
4.0 4.5
KGC
6
Effective Margin(S) Long
6
10
RGZ ± 0.1
C ≧ V + 0.5 ( E When L ＞ 300 0.5mm increments )
–
6.5
5.0
120 ° 120 °
40.00–500.00
11
RGZ
Short Type
Three flats cutting at 120° (D or P)/2 ≦ KTC ＜ H/2
7
5.5
－ 0.1 120 ° 0
ESNJ
KTC
20–150
L
7.5
12 13 14 15 17 20 21 25
6.0 6.5 7.5 8.5
KTC
8 9
L
(L–S) min.
40.00–60.00 60.01–70.00 70.01–80.00
20 30 40 50
10 12 15 16 20
40.00–500.00
10.5 12.5 13.5 17.0
8
80.01–
500.1–800.0
40.00–500.00
■ Shaft diameter (P) 0.01mm designation type
Part Number
L
C 0.1mm increments
S 1mm increments 20–100 ( E When D4/D4.5 V1.5–V1.9 20–40 )
P 0.01mm increments
E V 0.1mm increments
H T
Cmax.
Type
No.
0.01mm increments 0.1mm increments
4
40.00–200.00 40.00–250.00
3.50– 3.99 4.01– 4.49 4.51– 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 10.01–11.99 12.01–14.99 15.01–15.99 16.01–19.99
1.5 – 2.5
8
3.0
4.5
5
2.0 – 3.0 2.0 – 3.5 2.0 – 4.0 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 –12.0 3.0 –13.0 3.0 –16.0
3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.5 8.5
L
(L–S) min.
40.00–300.00
9
5.5
40.00–60.00
20 30
6
60.01–
6
10
-
6.5
11
C ≧ V + 0.5 and C ≦ P–1.5 ( E When L ＞ 300 0.5mm increments )
7
ESJB
20–150
7.5
12 13 14 15 17 20 21 25
8 9
L
(L–S) min.
40.00–500.00
40.00–60.00 60.01–70.00 70.01–80.00
20 30 40 50
10 12 15 16 20
10.5 12.5 13.5 17.0
8
80.01–
500.1–800.0
E V ≦ P–2.0
PartNumber–L–P–V–C–S (D selection type) ESNJ8 – 200.05 – V4.5 – C5.0 – S32 (P designation type) ESJB8 – 200.05 – P7.55 – V5.0 – C5.5 – S40
Order
263
264
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