SKH51 Concentricity ◎ 0.01 Wall thickness 0.6mm–
STRAIGHT EJECTOR SLEEVES –S DIMENSION LONG TYPE–
High Speed Steel SKH51 Die Steel SKD61 + Nitriding High Speed Steel SKH51
Delivery Quotation
Part Number – L – P – V – S – (KC/WKC … etc.)
Alterations
– V4.00 – S30 – KC 3.0
ESVK–H6 – 100.52
Alteration details D P.225
4mm
Alterations Code
Spec.
Alterations Code
Spec.
JIS (6/8mm)
E b 1 Range of guaranteed shaft diameter precision (Details D P.221 ) x 1 max. = 30 E When 30 ＜ S ≦ 50, guaranteed range of V dimension precision is 10mm from tip.
Part Number
Reduces the head thickness to less than standard. TC = 0.1mm increments E T–TC ≦ Lmax.–L E T/2 ≦ TC ＜ T (Dimensions L, (L–S) remain unchanged)
Shaft diameter selection type Shaft diameter designation (0.01mm increments) type ESVK–H ESVKB–H
Head thickness
T D/P Tolerance
T V Tolerance
Applicable center pin shaft diameter tolerance
Single flat cutting (D or P)/2 ≦ KC ＜ H/2
10mm
KC
0 － 0.02
TC
KC － 0.02 0
TC
T
+ 0.01
D(P) –0.01 –0.02 –0.02
※ Note that for sleeves with V dimension tolerance of 0 , combination with center pins that have shaft diameter tolerance 0 –0.005 is not available. The reason for this is fitting sections S are longer. (Details D P.219 )
4mm (T4)
0 –0.005
Reduces the head diameter. HC = 0.1mm increments E Shaft diameter (D or P) ≦ HC ＜ H
+ 0.01 0
About Designation Unit for Key Flat Cutting
–0.01 –0.02
WKC Two flats cutting
ESVKJ–H ESVKJB–H
6/8mm (JIS)
D(P) 0
(D or P)/2 ≦ WKC ＜ H/2
0 － 0.02
–0.005
WKC
–0.01 –0.02
HC
ESVK–M ESVKB–M
4mm (T4)
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
x 1
b 1 (Guaranteed Range of Shaft-diameter Precision)
KAC KBC
(1)To align the key flat
－ 0.02 0
－ 0.02 0
◎ 0.005
KAC
KBC
with the shaft diameter
Reduces the head diameter. (precision) HCC = 0.1mm increments E (DorP) + 1 ≦ HCC ＜ H–0.3 Performs C chamfering on the tip. CGX = 0.1mm increments E 0.2 ≦ CGX ≦ 1.5 and CGX ≦ X Combination with RGX not available Performs R chamfering on the tip. RGX = 0.1mm increments E 0.3 ≦ RGX ≦ 1.5 and RGX ≦ X Combination with CGX not available
HCC
Unit of designation Shaft diameter (D) selection 0.05mm increments possible Shaft diameter (P) designation 0.005mm increments possible
◎ 0.01
Two flats (right angled) cutting (D or P)/2 ≦ RKC ＜ H/2
RKC
RKC － 0.02 0
◎ 0.03
± 0.05 CGX 45 °
R ≦ 0.5
＋ 0.01 0 D or P
V
CGX
0
(DorP)–V 2
T
－ 0.02
–0.1
◎ 0.06
φ 0.01
C = V + (0.2–0.4)
＋ 3 0
（ L － S ） － 3 0
L
DKC Three flats cutting
S
(D or P)/2 ≦ DKC ＜ H/2
0 － 0.02
＋ 0.02
＋ 0.05 0
DKC
DKC
）
0 （ L > 200
Standard
L
L
RGX
± 0.1
M Material SKH51 H Hardness 58–60HRC Range of guaranteed base material hardness (Details D P.223 ) Overall quenching (No annealing on head)
RGX
(DorP)–V 2
–0.1
Total Length Designation
Four flats cutting (D or P)/2 ≦ SKC ＜ H/2
L
SKC
－ 0.02 SKC 0
Free Designation Shaft Diameter(P) Total Length Designation
(2) To designate arbitrary key flat dimensions Unit of designation 0.1mm
■ Shaft diameter (D) selection type Head thickness 4mm Head thickness JIS Part Number
AG °
± 0.5
Two flats (angled) cutting (D or P)/2 ≦ KGC ＜ H/2 AG = 1° increments 0 ＜ AG ＜ 360 Three flats cutting at 120° (D or P)/2 ≦ KTC ＜ H/2
0.01mm increments
0 °
KGC
S 0.5mm increments
KGC
Stepped Shape
Type
H T H T
D
L
V
Head thickness 4mm
Head thickness JIS
120 ° 120 °
Taper Clearance
－ 0.02 120 ° 0
KTC
3.5
0.80 – 2.30 0.80 – 2.80 0.80 – 3.80 0.80 – 4.80 0.80 – 5.80 2.00 – 6.20 2.00 – 7.20 2.00 – 8.20 2.00 – 9.20 2.00 –10.20 2.00 –11.20 2.00 –12.20
7
KTC
Effective Margin(S) Long Effective
4 5 6 7 8 9
– –
–
40.00–225.00
8 9
1.0 ≦ S ≦ (V × 10) and S ≦ 50
■ Characteristics ① The fitting section (S) can be long up to V × 10. ② Precision wire cutting is used to make the S dimension longer. ③ A softened layer in the bore made by wire cutting is removed by polishing. (Tolerance of the dimension V is the value after polishing.) ④ The ejector sleeves are of high precision (concentricity: 0.01, tolerances of the dimension V: + 0.01
10 11 13 14 15
ESVK–H ( D 0 –0.005 )
Short Type
6
10 11 14 15 16 17 18 19
4
ESVKJ–H ( D 0 –0.005 )
ESVK–M ( D –0.01 –0.02 )
10 11 12 13 14
E When 30 ＜ S ≦ 50,
guaranteed range of V dimension precision is 10mm from tip.
40.00–250.00
8
0 ) in addition to having a low price.
17
■ Precautions for use Use a structure that secures the sliding motion of the center pin when using precision ejector guide pins ( D P.873 –) and bushing ( D P.880 –).
19
■ Shaft diameter (P) 0.01mm designation type Head thickness 4mm Head thickness JIS Part Number
0.01mm increments
S 0.5mm increments
Type
H T H T
No.
L
P
V
Head thickness 4mm
Head thickness JIS
4 5 6 7 8 9
3.20 – 3.99 4.00 – 4.99 5.00 – 5.99 6.00 – 6.99 7.00 – 7.99 8.00 – 8.99 9.00 – 9.99 10.00 –10.99 11.00 –11.99 12.00 –12.99 13.00 –13.99
7 8 9
–
– –
0.80 ≦ V ≦ (P–1.20) 1.0 ≦ S ≦ (V × 10) and S ≦ 50
40.00–225.00
10 11 13 14 15
6
ESVKB–H ( P 0 –0.005 )
10 11 14 15 16 17 18 19
4
ESVKJB–H ( P 0 –0.005 )
E When 30 ＜ S ≦ 50,
10 11 12 13 14
ESVKB–M ( P –0.01 –0.02 )
guaranteed range of V dimension precision is 10mm from tip.
2.00 ≦ V ≦ (P–1.80)
40.00–250.00
8
17
19
Part Number
– L – P – V – S
Order
(D selection type) – V4.00 – S30 (P designation type) ESVKB–H6 – 140.00 – P5.95 – V3.95 – S28 ESVK–H6 – 150.00
231
232
Powered by FlippingBook