B M S E R I E S – B O R I N G M I L L J AW S

Boring Mill Jaws for Ultimate Workholding FlexibilityTypically used in conjunction with face plates, Boring Mill Jaws give you the flexibility to build a multi-jaw large workholding system designed to grip round or irregular shaped parts.

• Build a large 3, 4, 6 or even 7 jaw workholding system• Suitable for large Vertical turning lathes, boring machines, milling machines and jig installations • Used in conjunction with our FBK series faceplates up to 3 meters in diameter • Contact us to discuss your requirements

The Best Workholding.

3 JAWS 4 JAWS 6 JAWS 7 JAWS

BORING MILL JAWS TECHNICAL SPECIFICATIONS, MODELS AND DATA4 pcs. (1 set)

Jaw type Gripping force (kN) Input torque (N•m) Weight (Kg) Standard Accessory Optional Soft JawBM-3T Solid jaw 29 392 19 T-handle -

BM-3T-2P 2-Piece jaw 29 392 21 T-handle SJ-155

BM-4T Solid jaw 39 441 26 "Ratchet handle (19D) Socket SKB22B19B" -

BM-4T-2P 2-Piece jaw 39 441 28 "Ratchet handle (19D) Socket SKB22B19B" SJ-155

BM-6T Solid jaw 59 686 30 "Ratchet handle (19D) Socket SKB22B19B" -

BM-7T Solid jaw 68 735 55 "Ratchet handle (25.4D) Socket SKB26D25.4B" -

BM-7T-2P 2-Piece jaw 68 735 60 "Ratchet handle (25.4D) Socket SKB26D25.4B" SJ-170

BM SER IES TECHNICAL SPECIF ICAT IONS

140

凸凹15

凸凹22

100

10032

22017

□15

20

25 25

1226

90

142

2914

φ41

φ41

□19□22

45

183.5

135

450

180

4343

Stroke50

Stroke50

Stroke50

凸凹22

Stroke40

215 170

165

45

45

1834

135

90

183.5

38.1

M2090 60

90

60

250

180

27.543

125

58

4545 80 80

6-M24

60

2134

125

90145225

80

Stroke50

4-M16

4-M20

150

16590 60

AccessoryT-Handle

Use for large-sized lathes, vertical lathes, boring lathes, milling lathes, and installations.4 pcs. (1 set)

AccessoryRatchet handle 19DSocket SK22B19B

Gripping force : 29kN(Input torque : 392N･m)

Weight : 19kg

Gripping force : 29kN(Input torque : 392N･m)

Weight : 21kg

Gripping force : 39kN(Input torque : 441N･m)

Weight : 26kg

Gripping force : 39kN(Input torque : 441N･m)

Weight : 28kg

Gripping force : 59kN(Input torque : 686N･m)

Weight : 30kg

BM-3T

BORING MILL JAWS

BM-4T

BM-6T

BM-3T-2P(2-Piece Jaw type)Optional soft jaw : SJ-155

BM-4T-2P(2-Piece Jaw type)Optional soft jaw : SJ-155

5050

□19 □22

BM-3T 140

凸凹15

凸凹22

100

10032

22017

□15

20

25 25

1226

90

142

2914

φ41

φ41

□19□22

45

183.5

135

450

180

4343

Stroke50

Stroke50

Stroke50

凸凹22

Stroke40

215 170

165

45

45

1834

135

90

183.5

38.1

M2090 60

90

60

250

180

27.543

125

58

4545 80 80

6-M24

60

2134

125

90145225

80

Stroke50

4-M16

4-M20

150

16590 60

AccessoryT-Handle

Use for large-sized lathes, vertical lathes, boring lathes, milling lathes, and installations.4 pcs. (1 set)

AccessoryRatchet handle 19DSocket SK22B19B

Gripping force : 29kN(Input torque : 392N･m)

Weight : 19kg

Gripping force : 29kN(Input torque : 392N･m)

Weight : 21kg

Gripping force : 39kN(Input torque : 441N･m)

Weight : 26kg

Gripping force : 39kN(Input torque : 441N･m)

Weight : 28kg

Gripping force : 59kN(Input torque : 686N･m)

Weight : 30kg

BM-3T

BORING MILL JAWS

BM-4T

BM-6T

BM-3T-2P(2-Piece Jaw type)Optional soft jaw : SJ-155

BM-4T-2P(2-Piece Jaw type)Optional soft jaw : SJ-155

5050

□19 □22

BM-4T

140

凸凹15

凸凹22

100

10032

22017

□15

20

25 25

1226

90

142

2914

φ41

φ41

□19□22

45

183.5

135

450

180

4343

Stroke50

Stroke50

Stroke50

凸凹22

Stroke40

215 170

165

45

45

1834

135

90

183.5

38.1

M2090 60

90

60

250

180

27.543

125

58

4545 80 80

6-M24

60

2134

125

90145225

80

Stroke50

4-M16

4-M20

150

16590 60

AccessoryT-Handle

Use for large-sized lathes, vertical lathes, boring lathes, milling lathes, and installations.4 pcs. (1 set)

AccessoryRatchet handle 19DSocket SK22B19B

Gripping force : 29kN(Input torque : 392N･m)

Weight : 19kg

Gripping force : 29kN(Input torque : 392N･m)

Weight : 21kg

Gripping force : 39kN(Input torque : 441N･m)

Weight : 26kg

Gripping force : 39kN(Input torque : 441N･m)

Weight : 28kg

Gripping force : 59kN(Input torque : 686N･m)

Weight : 30kg

BM-3T

BORING MILL JAWS

BM-4T

BM-6T

BM-3T-2P(2-Piece Jaw type)Optional soft jaw : SJ-155

BM-4T-2P(2-Piece Jaw type)Optional soft jaw : SJ-155

5050

□19 □22

BM-6T

Face plates are also manufactured. φ800~φ3000

Design and manufacture of special boring mill jaws are also available at your request.

4 pcs. 1 set (with a retightening clamp)

We can design and manufacture boring mill jaws and face plates at your request. Please inform us of the chuck diameter, installation dimensions, size of workpiece and machining conditions, etc.

BM-7T

30HTThrust force of one jaw : MAX.15t(Reference dimensions)

60HTThrust force of one jaw : MAX.20t(Reference dimensions)

With JAKOB power clamp screwSPECIAL DESIGN

Power Clamp ScrewThrust force of one jaw : 15t~

(Reference dimensions)

FACE PLATE WITH BORING MILL JAWS

POWERFUL TYPE BORING MILL JAWS

BORING MILL JAWS AND FACE PLATE

BM-7T-2P(2-Piece Jaw type)Optional soft jaw : SJ-170

220

4-M24

24080

32

50

26

90135

125 19

540

180

1708095

235

210 295

280270100110

28

48220

385

510

75

370125

M30

28057

M24

310100

48 240

750

750

3020

37075130 130

95

160

170

5823

115

9075

180 27

030

20

20

95

60

60

170270

Stroke60

Stroke60

φ50□25.

4 Gripping force : 68kN(Input torque : 735N･m)

Weight : 55kg

Gripping force : 68kN(Input torque : 735N･m)

Weight : 60kg

AccessoryRatchet handle 25.4DSocket SK26D25.4B

BM-7T

Boring Mill Jaws Configuration Options, Models and Dimensions