Collapse per collet: 0.5 mm (0.019 in.)
Precision per DIN 6388B *Form A

A B
mm. in. mm. in.
RDO 16
RDO 20
RDO 25
RDO 35
RDO 44
14.5
20.0
25.5
35.3
44.0
0.57
0.78
1.00
1.39
1.73
26.0
34.0
40.0
52.0
60.0
1.03
1.33
1.57
2.05
2.36

RDO 16 COLLETS

INCH SIZES
(in.) Part No.
1/8
3/16
1/4
5/16
3/8
413001
413002
413003
413004
413005

 

NOTE: Form A style

RDO 20 COLLETS

METRIC SIZES
(mm.) Part No.
2
3
4
5
6
7
8
9
10
11
12
13
414102
414103
414104
414105
414106
414107
414108
414109
414110
414111
414112
414113
INCH SIZES
(in.) Part No.
1/8
3/16
1/4
5/16
3/8
7/16
1/2
414001
414002
414003
414004
414005
414006
414007

RDO 25 COLLETS

METRIC SIZES
(mm.) Part No.
2
2.5
3
3.5
4
4.5
5
5.5
6
6.5
7
7.5
8
8.5
9
4150001
4150002
4150003
4150004
4150005
4150006
4150007
4150008
4150009
4150010
4150011
4150012
4150013
4150014
4150015
METRIC SIZES
(mm.) Part No.
9.5
10
10.5
11
11.5
12
12.5
13
13.5
14
14.5
15
15.5
16
4150016
4150017
4150018
4150019
4150020
4150021
4150022
4150023
4150024
4150025
4150026
4150027
4150028
4150029
INCH SIZES
(in.) Part No.
1/16
5/64
3/32
7/64
1/8
9/64
5/32
11/64
3/16
13/64
7/32
15/64
1/4
17/64
9/32
19/64
5/16
21/64
11/32
4151001
4151002
4151003
4151004
4151005
4151006
4151007
4151008
4151009
4151010
4151011
4151012
4151013
4151014
4151015
4151016
4151017
4151018
4151019
INCH SIZES
(in.) Part No.
23/64
3/8
25/64
13/32
27/64
7/16
29/64
15/32
31/64
1/2
33/64
17/32
35/64
9/16
37/64
19/32
39/64
5/8
4151020
4151021
4151022
4151023
4151024
4151025
4151026
4151027
4151028
4151029
4151030
4151031
4151032
4151033
4151034
4151035
4151036
4151037
Part No. No. of Pcs. Range Increment
4150030
4151038
4151110
29
36
9
2-16 mm.
1/16-5/8 in.
1/8-5/8 in.
0.5 mm.
1/64 in.
1/16 in.

NOTE: Sealed collets available for coolant-through applications

RDO 35 COLLETS

METRIC SIZES
(mm.) Part No.
2
2.5
3
3.5
4
4.5
5
5.5
6
6.5
7
7.5
8
8.5
9
9.5
10
10.5
11
11.5
12
12.5
13
13.5
4620001
4620002
4620003
4620004
4620005
4620006
4620007
4620008
4620009
4620010
4620011
4620012
4620013
4620014
4620015
4620016
4620017
4620018
4620019
4620020
4620021
4620022
4620023
4620024
METRIC SIZES
(mm.) Part No.
14
14.5
15
15.5
16
16.5
17
17.5
18
18.5
19
19.5
20
20.5
21
21.5
22
22.5
23
23.5
24
24.5
25
4620025
4620026
4620027
4620028
4620029
4620030
4620031
4620032
4620033
4620034
4620035
4620036
4620037
4620038
4620039
4620040
4620041
4620042
4620043
4620044
4620045
4620046
4620047
INCH SIZES
(in.) Part No.
1/8
3/16
1/4
5/16
3/8
7/16
1/2
9/16
5/8
11/16
3/4
13/16
7/8
15/16
1
4621001
4621002
4621003
4621004
4621005
4621006
4621007
4621008
4621009
4621010
4621011
4621012
4621013
4621014
4621015

RDO 35 Collet Set

Part No. No. of Pcs. Range Increment
4620048
4621016
47
15
2-25 mm.
1/8-1 in.
0.5 mm.
1/16 in.

NOTE: Sealed collets available for coolant-through applications

RDO 44 COLLETS

METRIC SIZES
(mm.) Part No.
4
4.5
5
5.5
6
6.5
7
7.5
8
8.5
9
9.5
10
10.5
11
11.5
12
12.5
13
4670001
4670002
4670003
4670004
4670005
4670006
4670007
4670008
4670009
4670010
4670011
4670012
4670013
4670014
4670015
4670016
4670017
4670018
4670019
METRIC SIZES
(mm.) Part No.
13.5
14
14.5
15
15.5
16
16.5
17
17.5
18
18.5
19
19.5
20
20.5
21
21.5
22
22.5
4670020
4670021
4670022
4670023
4670024
4670025
4670026
4670027
4670028
4670029
4670030
4670031
4670032
4670033
4670034
4670035
4670036
4670037
4670038
INCH SIZES
(in.) Part No.
23
23.5
24
24.5
25
25.5
26
26.5
27
27.5
28
28.5
29
29.5
30
30.5
31
31.5
32
4670039
4670040
4670041
4670042
4670043
4670044
4670045
4670046
4670047
4670048
4670049
4670050
4670051
4670052
4670053
4670054
4670055
4670056
4670057
INCH SIZES
(in.) Part No.
1/8
3/16
1/4
5/16
3/8
7/16
1/2
9/16
5/8
11/16
3/4
13/16
7/8
15/16
1
1-1/16
1-1/8
1-3/16
1-1/4
4671001
4671002
4671003
4671004
4671005
4671006
4671007
4671008
4671009
4671010
4671011
4671012
4671013
4671014
4671015
4671016
4671017
4671018
4671019

RDO 44 Collet Set

Part No. No. of Pcs. Range Increment
4670058
4671020
57
19
4-32 mm.
1/8-1-1/4 in.
0.5 mm.
1/16 in.

NOTE: Sealed collets available for coolant-through applications

TC DIN RDO COLLET CHUCKS

Part No. Description A D Ret. Knob
Threading No.
Nut Wrench
(mm.) (in.) (mm.) (in.)
655224
655425
655426
655436
675447
655427
655437
675448
TC 40/RDO 25
TC 40/RDO 25
TC 40/RDO 35
TC 45/RDO 35
TC 50/RDO 35
TC 40/RDO 44
TC 45/RDO 44
TC 50/RDO 44
50
100
80
70
80
80
70
80
1.97
3.94
3.15
2.76
3.15
3.15
2.76
3.15
43
43
60
60
60
72
72
72
1.69
1.69
2.36
2.36
2.36
2.83
2.83
2.83
M16
M16
M16
M20
M24
M16
M20
M24
KM/RDO 25
KM/RDO 25
KM/RDO 35
KM/RDO 35
KM/RDO 35
KM/RDO 44
KM/RDO 44
KM/RDO 44
HSO 25
HSO 25
HSO 35
HSO 35
HSO 35
HSO 44
HSO 44
HSO 44

Wrenches are sold separately.

BT RDO COLLET CHUCKS

Part No. Description A D Ret. Knob
Threading No.
Nut Wrench
(mm.) (in.) (mm.) (in.)
1635424
1635425
1655447
1635427
1655448
BT 40/RDO 25
BT 40/RDO 35
BT 50/RDO 35
BT 40/RDO 44
BT 50/RDO 44
60
80
90
90
100
2.36
3.15
3.54
3.54
3.94
43
60
60
72
72
1.69
2.36
2.36
2.83
2.83
M16
M16
M24
M16
M24
KM/RDO 25
KM/RDO 35
KM/RDO 35
KM/RDO 44
KM/RDO 44
HSO 25
HSO 35
HSO 35
HSO 44
HSO 44

Wrenches are sold separately.

NMTB RDO COLLET CHUCKS

Part No. Description A D Ret. Knob
Threading No.
Nut Wrench
(mm.) (in.) (mm.) (in.)
2635425
2635426
2635427
2635428
NMT40/RDO 35
NMT50/RDO 35
NMT40/RDO 44
NMT50/RDO 44
80
80
80
80
3.15
3.15
3.15
3.15
60
60
72
72
2.36
2.36
2.83
2.83
5/8-11
1-8
5/8-11
1-8
KM/RDO 35
KM/RDO 35
KM/RDO 44
KM/RDO 44
HSO 35
HSO 35
HSO 44
HSO 44

Wrenches are sold separately.

RDO CLAMPING NUTS (Ball-Bearing)

Part No. Collet A B C
(mm.) (in.) (mm.) (in.)
30320
30325
30335
30344
RDO 20
KM/RDO 25
KM/RDO 35
KM/RDO 44
35
43
60
72
1.38
1.69
2.36
2.83
20
24
30
34
0.79
0.94
1.18
1.33
M27 X 1.5
M33 X 1.5
M48 X 2.0
M68 X 2.5

RDO WRENCH

Part No. Type
22220
22225
22235
22244
HSO20
HSO25
HSO35
HSO44

RDO MASTER TOOLING SETS

Part No. Collet Type Collets
Per Set
Range Chuck Nut Wrench
MSO46216
MSO46217
MSO46721
MSO46722
RDO 35
RDO 35
RDO 44
RDO 44
15
15
19
19
1/8 – 1 in
1/8 – 1 in
1/8 – 1 in
1/8 – 1 in
NMTB 40
NMTB 50
NMTB 40
NMTB 50
KM/RDO 35
KM/RDO 35
KM/RDO 44
KM/RDO 44
HSO 35
HSO 35
HSO 44
HSO 44

Complete precision milling system in fitted wooden box. Sets include collets, collet chuck and wrench.