Quick Correction of Spindle Runout by Tool Holder Features. Runout accuracy of machine tool spindles may be decreased after extended use. Long drilling or reaming operations on such machines lead to variations in precision, shortened tool life, etc. The RA Holder is an effective countermeasure to these problems.
DRILL TAPPER
RUNOUT ADJUSTABLE RA HOLDER
2
Quick Correction of Spindle Runout by Tool Holder Features Runout accuracy of machine tool spindles may be decreased after extended use. Long drilling or reaming operations on such machines leads to variations in precision, shortened tool life, etc. The RA Holder is an effective countermeasure to these problems. • Uniform hole diameter • Improves surface roughness • Extends tool life
Simple Design & Easy Adjustment
Runout Adjustment Screw (right & left)
Runout Adjustment Ring
(mark)
Lock Bolt
1. Rotate the runout adjustment screw and align the (mark) with the peak runout 2. Fix the runout adjustment ring by tightening (3) lock bolts 3. Adjust runout by rotating the runout adjustment screw
RUNOUT WITHOUT RA HOLDER 20µm
RUNOUT WITH RA HOLDER 2µm
3
RUNOUT ADJUSTABLE RA HOLDER
NEW BABY CHUCK CLAMPING RANGE: ø.5-20mm
COOLANT
R
SPINDLE SYSTEM DUAL CONTACT
THROUGH
x (Cutting Tool Length)
x (Cutting Tool Length)
L
L
L 1
L 1
Adjusting Screw (Ordered Separately)
Adjusting Screw (Ordered Separately)
H
H
Adjusting Amount
Adjusting Amount
Fig. 1
K
Fig. 2
Adjustment
Catalog Number
Weight (lbs.)
Fig.
ød
øD øD 1
L
L 1
K
H
Collet
x=50mm x=100mm
BBT30-NBS8-75NRA
.5-8mm
1 2 1
.984 1.772 2.95 1.10
— .91-1.66
20μm 31μm 1.5 18μm 27μm 3.1 22μm 33μm 2.9 18μm 27μm 3.5 25μm 34μm 4.2 17μm 25μm 5.5 21μm 29μm 6.0 19μm 28μm 9.3 24μm 33μm 9.7 30μm 39μm 9.9 17μm 25μm 10.4 22μm 30μm 11.0
NBC8- o
-NBS13-110NRA
2.5-13mm
1.378 2.283 4.33 1.34 1.38
1.61-2.36 NBC13- o
BBT40-NBS8-90NRA
.5-8mm
.984 1.772 3.54 1.46
— .91-1.65
NBC8- o
-NBS13-90NRA
3.54 1.34 5.32 3.11
2.5-13mm
1
1.378 2.283
— 1.61-2.36 NBC13- o
-135NRA
-NBS20-120NRA
4.72 1.77 1.38 5.91 2.56 1.77
2.5-20mm
2
1.811 2.756
1.89-2.56 NBC20- o
-150NRA
BBT50-NBS13-105NRA
4.13 1.50 5.32 2.68 6.50 3.86 4.72 1.89 5.91 3.07
-135NRA -165NRA
2.5-13mm
1
1.378 2.283
— 1.61-2.36 NBC13- o
-NBS20-120NRA
2.5-20mm
1
1.811 2.756
— 1.89-2.56 NBC20- o
-150NRA
• Collet, wrench and adjusting screw must be ordered separately • “H” indicates the adjustment length with an adjusting screw • BCV available upon request
Runout Adjustment Amount The adjustment amount depends on the length of the holder and the tool projection length. The maximum adjustment amount possible for 50mm and 100mm tool projection lengths is listed in the table. The maximum adjustment amount is a reference figure available when the Adjustment Screw is tightened with the listed allowable torque. Allowable Torque for Adjusting Screw
Wrench (Optional)
Allowable Torque (N-m)
NEW BABY CHUCK
Adjusting Amount
NBS8-NRA NBS13-NRA NBS20-NRA
CK-T2.5
3
x=50mm (Cutting Tool Length) x=100mm (Cutting Tool Length)
CK-T3
6
RUNOUT ADJUSTABLE RA HOLDER
Hi-POWER MILLING CHUCK CLAMPING RANGE: ø20-32mm
COOLANT
R
SPINDLE SYSTEM DUAL CONTACT
THROUGH
x (Cutting Tool Length)
x (Cutting Tool Length)
L
L
H
H
Adjusting Screw (Ordered Separately)
L 1
L 1
Adjusting Screw (Ordered Separately)
Adjusting Amount
Adjusting Amount
1.378
Fig. 2
Fig. 1
Adjustment
Catalog Number
Min Clamping
Weight (lbs.)
Fig.
ød
øD øD 1
L
L 1
K
H
Wrench
x=50mm x=100mm
BBT40-HMC20S-130NRA
20mm 25mm 32mm 20mm 25mm 32mm
1.969 2.835 5.12 1.81 2.72-3.11 3.35 2.323 3.150 5.32 1.81 2.95-3.35 3.54 2.677 3.386 5.71 2.17 3.35-3.74 4.13 1.969 2.835 4.92 1.81 2.72-3.11 3.35 2.323 3.150 4.92 1.81 2.95-3.35 3.54 2.677 3.386 5.32 2.17 3.35-3.74 4.13
1.77 1.77 2.17 1.77 1.77 2.17
23μm 33μm FK45-50L 6.4 21μm 30μm FK58-62L 7.7 20μm 28μm FK68-75L 8.4 23μm 33μm FK45-50L 11.5 21μm 30μm FK58-62L 12.3 20μm 28μm FK68-75L 13.2
-HMC25S-135NRA -HMC32S-145NRA
1
BBT50-HMC20S-125NRA
-HMC25S-125NRA -HMC32S-135NRA
2
• Collet, wrench and adjusting screw must be ordered separately • “H” indicates the adjustment length with an adjusting screw • BCV available upon request
Runout Adjustment Amount The adjustment amount depends on the length of the holder and the tool projection length. The maximum adjustment amount possible for 50mm and 100mm tool projection lengths is listed in the table. The maximum adjustment amount is a reference figure available when the Adjustment Screw is tightened with the listed allowable torque. Allowable Torque for Adjusting Screw
Adjusting Amount
NEW Hi-POWER MILLING CHUCK
Wrench (Optional)
Allowable Torque (N-m)
HMC20S-NRA HMC25S-NRA HMC32S-NRA
x=50mm (Cutting Tool Length) x=100mm (Cutting Tool Length)
CK-T4
8
5
RUNOUT ADJUSTABLE RA HOLDER
NEW BABY CHUCK CLAMPING RANGE: ø.5-20mm
COOLANT
THROUGH
x (Cutting Tool Length)
L
H
Adjusting Screw (Ordered Separately)
L 1
Adjusting Amount
Coolant Pipe (Ordered Separately)
Adjustment
Catalog Number
Weight (lbs.)
ød
øD
øD 1
L
L 1
H
Collet
x=50mm x=100mm
HSK-A63-NBS8-105NRA
.5-8mm .984
1.772
4.13 4.53 5.32
1.69 1.38 1.77
.91-1.65 1.61-2.36 1.89-2.56
23μm 34μm 2.6 18μm 27μm 4.0 17μm 25μm 5.3
NBC8- o NBC13- o NBC20- o
-NBS13-115NRA -NBS20-135NRA
2.5-13mm 1.378 2.283 2.5-20mm 1.811 2.756
• MEGA NEW BABY NUT is included, coolant pipe, collet, wrench and adjusting screw must be ordered separately • “H” indicates the adjustment length with an adjusting screw
Runout Adjustment Amount The adjustment amount depends on the length of the holder and the tool projection length. The maximum adjustment amount possible for 50mm and 100mm tool projection lengths is listed in the table. The maximum adjustment amount is a reference figure available when the Adjustment Screw is tightened with the listed allowable torque. Allowable Torque for Adjusting Screw
Wrench (Optional)
Allowable Torque (N-m)
NEW BABY CHUCK
Adjusting Amount
NBS8-NRA NBS13-NRA NBS20-NRA
CK-T2.5
3
x=50mm (Cutting Tool Length) x=100mm (Cutting Tool Length)
CK-T3
6
6
RUNOUT ADJUSTABLE RA HOLDER
Hi-POWER MILLING CHUCK CLAMPING RANGE: ø20-32mm
COOLANT
R
SPINDLE SYSTEM DUAL CONTACT
THROUGH
x (Cutting Tool Length)
L
H
Adjusting Screw (Ordered Separately)
L 1
Adjusting Amount
Coolant Pipe (Ordered Separately)
Adjustment
Catalog Number
Min Clamping
Weight (lbs.)
ød
øD øD1
L
L1
H
H Max
Wrench
x=50mm x=100mm
HSK-A63-HMC20S-145NRA 20mm
1.969 2.835 5.71 1.81 2.72-3.11
3.35
1.77 2.09
23μm 33μm FK45-50L 6.4 20μm 28μm FK68-75L 8.6
32mm
2.677 3.386 6.10 2.17
— 4.72
-HMC32S-155NRA v
• Coolant pipe, collet, wrench and adjusting screw must be ordered separately • “H” indicates the adjustment length with an adjusting screw • Adjusting screws cannot be used with models marked v
Runout Adjustment Amount The adjustment amount depends on the length of the holder and the tool projection length. The maximum adjustment amount possible for 50mm and 100mm tool projection lengths is listed in the table. The maximum adjustment amount is a reference figure available when the Adjustment Screw is tightened with the listed allowable torque. Allowable Torque for Adjusting Screw
Adjusting Amount
NEW Hi-POWER MILLING CHUCK
Wrench (Optional)
Allowable Torque (N-m)
HMC20S-NRA HMC32S-NRA
CK-T4
8
x=50mm (Cutting Tool Length) x=100mm (Cutting Tool Length)
7
BIG DAISHOWA Inc. 2600 Huntington Blvd | Hoffman Estates, IL 60192 | P: (224) 770-2999 | F: (224) 770-2997 | bigdaishowa@us.bigdaishowa.com | bigdaishowa.com
09/2018 © Copyright 2018 BIG DAISHOWA Inc.
Page 1 Page 2 Page 3 Page 4 Page 5 Page 6 Page 7 Page 8Powered by FlippingBook