ALTERATION GUIDE FOR EJECTOR SLEEVES
■ Ejector sleeve Items
■ Ejector sleeve Items
Alterations
Code
Specifications
Alterations
Code
Specifications
Key flat cutting
Shaft diameter (Straight) Retention Diameter (Stepped type)
Single flat cutting Range of designation ( D or P)/2 ≦ KC ＜ H/2
When aligning the head cut
with the surface position
KC
Two–step recessing Enlarges the recess C by adding a step. CW = 0.1mm increments
KC
CW
Material
T KC tolerance
W = 5mm increments W ≧ 10 W ≦ L–S–10 W ≦ 200
Stepped sleeves ( ＊ and W ≦ L–N–20 ) Designation method CW8.7–W35
0 –0.02
SKH51
CW ≧ C + 0.5 CW ≦ Cmax .
Changes recess
Key flat cutting
＋ 5 0
KC
W
0 –0.1
SKD61 + Nitrided
Two parallel flats cutting Range of designation (D or P)/2 ≦ WKC ＜ H/2
Unit of designation Straight shaft diameter selection type (D/2) ................................................0.05mm increments possible Straight shaft diameter designation type (P/2) .............................................. 0.005mm increments possible Stepped type (D/2)...........................0.05mm increments possible Designation method • KC2.61 (When P5.22) • WKC3.085 (In case of P6.17) • KAC3.25–KBC4 (When D6.5) • RKC2.77 (When P5.54) • DKC3 (When D6) • SKC2.5 (When P5) • KGC3.5–AG125 (When D7) • KTC3.085 (In case of P6.17) E The tolerance is SKH51 0 –0.02 SKD61 + Nitrided 0 –0.1 even when (D or P)/2 is designated to fit to the shaft diameter (straight). E The tolerance is SKH51 0 –0.02 SKD61 + Nitrided 0 –0.1 even when D/2 is designated to fit to the retention diameter (stepped).
WKC
CGX ± 0.05 45 °
0.2 ≦ CGX ≦ 1.5 and CGX ≦ 0.3 ≦ RGX ≦ 1.5 and RGX ≦ D(P)–V 2 D(P)–V 2 0.2 ≦ CGZ ≦ 1.0 and CGZ ≦ D(P)–V 2 0.5 ≦ RGZ ≦ 1.0 and RGZ ≦ D(P)–V 2
WKC
Performs C chamfering on the tip. CGX = 0.1mm increments E Available when L ≦ 300
CGX
Key flat cutting
–0.1 Designation method CGX0.2
Varied width two parallel flats cutting Range of designation
L
KAC KBC
RGX ± 0.1
(D or P)/2 ≦ KAC KAC ＜ KBC ＜ H/2
KAC
KBC
Performs R chamfering on the tip. RGX = 0.1mm increments E Available when L ≦ 300
RGX
–0.1 Designation method RGX0.3
When SKH51 , tolerance of flat cutting is 0 –0.02 .
L
Key flat cutting
Right angled two flats cutting Range of designation (D or P)/2 ≦ RKC ＜ H/2
CGZ ± 0.05
RKC
Performs boring C chamfering on the tip. CGZ = 0.1mm increments E Available when L ≦ 300
RKC
CGZ
Tip Machining
45 °
–0.1 Designation method CGZ0.2
L
Key flat cutting
Three flats cutting Range of designation (D or P)/2 ≦ DKC ＜ H/2
RGZ ± 0.1
Performs boring R chamfering on the tip. RGZ=0.1mm increments E Available when L ≦ 300
DKC
Head alterations
RGZ
When SKD61 , toleran- ceof flat cutting is 0 –0.1 .
Designation method RGZ0.5
DKC DKC
–0.1
To designate an arbitrary flat size
L
Key flat cutting
Material
T KC tolerance
0 –0.02
■ Ejector Sleeve & One–step Center Pin Sets Items Alterations Code
Four flats cutting Range of designation (D or P)/2 ≦ SKC ＜ H/2
SKH51
SKC
SKD61 + Nitrided
0 –0.1
KC
SKC
Specifications
Unit of designation Designation method
0.1mm increments only
Key flat cutting (Angled)
Turning stopper processing
Adds a flat at the reference plane (0°), and another at the designated angle from there.
• KC1.4 • WKC2.3 • KAC1.4–KBC1.6 • RKC1.4 • DKC1.7 • SKC5.8 • KGC1.4–AGB5 • KTC2.3
Unit of designation ① WC = 0.1mm increments
± 0.5
Adds a flat on the head. Range of designation V/2 ≦ WC ＜ Q/2
AG °
② When WC = V/2, 0.05mm increments available
WC
KGC
0 °
Designation method ① WC 1.4 ② WC 1.75
Range of designation (D or P)/2 ≦ KGC ＜ H/2 AG=1° increments 0 ＜ AG ＜ 360 Three flats cutting at 120°. Range of designation (D or P)/2 ≦ KTC ＜ H/2
－ 0.1 0
WC
KGC
Turning stopper processing
Key flat cutting (Angled)
120 ° 120 °
Unit of designation ① WWC = 0.1mm increments
Adds two parallel flats on the head. Range of designation V/2 ≦ WWC ＜ Q/2
120 °
KTC
② When WWC = V/2, 0.05mm increments available
WWC
Designation method ① WWC 1.8 ② WWC 2.75
KTC
0 － 0.1 WWC
Head diameter change
Reduces the head diameter. Range of designation D(P) ≦ HC ＜ H Unit of designation 0.1mm increments Designation method HC6.5 E In relation to the head diameter tolerance, alteration may create a straight piece with little diameter difference between the head and shaft.
Head diameter change
HC
Reduces the head thickness to less than standard. Range of designation V ≦ QC ＜ Q
Head alteration
QC
0.1mm increments
Unit of designation
Designation method QC 6.5
Head diameter change (precision)
Reduces the head diameter. (precision) Range of designation D(P) + 1 ≦ HCC ＜ H–0.3 Unit of designation 0.1mm increments Designation method HCC6.1
Reduces the head thickness to less than standard. (Dimensions X and F remain unchanged) However, for ESNS and ESJS, the dimension X becomes shorter by (J–JC). E J–JC ≦ Xmax.–X Range of designation J/2 ≦ JC ＜ J
Head thickness change
HCC
JC
Unit of designation
0.1mm increments
JC
Head thickness change
Designation method JC 3.5
J
Reduces the head thickness to less than standard. Dimension L remains unchanged except blank type. Range of designation T/2 ≦ TC ＜ T E T–TC ≦ Lmax.–L
TC
TC
T
E Note that designating (H/2–0.15) or more for key flat cutting alteration will create hardly any flat on the head.
225
226
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