SKH51 Thin–wall Concentricity ◎ 0.005 Wall thickness 0.3mm–
PRECISION SMALL DIAMETER/THIN–WALL STEPPED EJECTOR SLEEVES –TAPERED TYPE–
Part Number – L – P – V – N – S – (KC/WKC … etc.) ESVFX 3 – 100.00 – P2.50 – V1.00 – N60 – S2 – KC 2.5
High Speed Steel SKH51 Die Steel SKD61 + Nitriding High Speed Steel SKH51
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 (Dimensions L, N, (L–S) remain unchanged)
Single flat cutting D/2 ≦ KC ＜ H/2
0 － 0.02
TC
KC
TC
KC － 0.02 0
4mm
4
JIS (6/8mm)
Reduces the head diameter. HC = 0.1mm increments E D ≦ HC ＜ H
Two flats cutting D/2 ≦ WKC ＜ H/2
E Range of guaranteed retention diameter (D) precision (Details D P.221 ) Step R (Details D P.222 ) E Range of guaranteed tip–diameter precision (b 2 ) (Details D P.222 )
WKC
Part Number
T P Tolerance T V Tolerance Applicable center pin shaft diameter tolerance
0 － 0.02
10mm
WKC
HC
About Designation Unit for Key Flat Cutting
E I n relation to the diameter tolerance, alteration may create a straight piece with little diameter difference between the head and shaft.
0 –0.005 (Details D P.219 )
+ 0.005 0
0 –0.005
ESVFX
D(P) –0.01 –0.02
Varied width parallel flats cutting D/2 ≦ KAC ＜ H/2 KBC = 0.1mm increments only KAC ＜ KBC ＜ H/2
KAC KBC
－ 0.02 0
－ 0.02 0
KAC
KBC
D(P) 0
Reduces the head diameter. (Precision) HCC = 0.1mm increments E D + 1 ≦ HCC ＜ H–0.3
–0.005
(1) To align the key flat with the retention diameter Unit of designation 0.5mm increments possible
HCC
◎ 0.003
Two flats (right angled) cutting D/2 ≦ RKC ＜ H/2
RKC
RKC － 0.02 0
＋ 3 0
◎ 0.005
Taper clearance
S
R ≦ 0.5
max.1000
Step R
◎ 0.01
Three flats cutting D/2 ≦ DKC ＜ H/2
DKC
1
0 － 0.02
DKC
DKC
◎ 0.03
(2) To designate arbitrary key flat dimensions
◎ 0.06
Four flats cutting D/2 ≦ SKC ＜ H/2
SKC
＋ 0.005 0
－ 0.02 0
T = 4
－ 0.02 SKC 0
b 2
V
A
Unit of designation 0.1mm
－ 0.005 0
N － 10 ± 2
Standard
P
φ 0.005
A
AG °
± 0.5
Two flats (angled) cutting D/2 ≦ KGC ＜ H/2 AG = 1° increments 0 ＜ AG ＜ 360
N － 5 0
Total Length Designation
0 °
＋ 0.02 0
KGC
L
KGC
Free Designation Shaft Diameter(P) Total Length Designation Shaft Diameter(P)
120 ° 120 °
Three flats cutting at 120° D/2 ≦ KTC ＜ H/2
－ 0.02 120 ° 0
KTC
M Material H Hardness
SKH51
58–60HRC Range of guaranteed base material hardness (Details D P.223 ) Overall quenching (No annealing on head)
E Release hole (C) dimensions vary depending on the shape of the taper clearance part. E Note that the Stepped Center Pin's retention diameter (D) is too large to fit in the recess (C). (Details D P.220 )
KTC
Stepped Shape
Taper Clearance
Head thickness 4mm Tapered part
Effective Margin(S) Long
Part Number
0.01mm increments
1mm increments
Cmax.
Short Type
H T
Type
D
L
P
V
N
S
3
2.50–3.00 1.00–1.50
6
2.2
100.00–150.00
4
3.00–4.00
7
3.2
5
8
4.2
N ≧ L/2 (L–N ≧ 30)
Tapered 1/1000 or more
2 ≦ S ≦ V × 3
ESVFX
4
1.00 ≦ V ≦ D–2
6
9
5.2
100.00–200.00 D–1.5 ≦ P ≦ D
7
10
6.2
8
11
7.2
E Cmax. ≧ C ≧ V + 0.5
E V working limits V ≦ P–0.6
PartNumber– L – P – V – N – S ESVFX 3 – 100.00 – P2.50 – V1.00 – N60 – S2
Order
Delivery Quotation
■ Characteristics • Since the tapered shape is used for the release hole, it is not damaged easily when inserting the center pin. • With wall thickness 0.3mm–, total length L can be set up to 200mm.
235
236
Powered by FlippingBook