National BM20 Header Progressive Bolt Maker

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Manufacturer National
Model BM20
Year 1987
Location India IN
Category Miscellaneous presses and forging machines
Product id P260312136
Language

Specifications

Stroke length 30 mm
Engine Power 75 kW
-------------------
Weight 46700 kg
worked hours
hours under power
state as-is, where-is
At local norms ---------
status
Datasheet National BM20
Last availability date 02/04/2026

Automatic description (AI-Generated)

The National BM20 is a robust forging machine manufactured in 1987, designed for precision metal forming tasks. It features a stroke length of 30 mm, suitable for a variety of forging operations. This machine accommodates a diameter range of 24 mm and includes four dies, allowing for versatile die configurations. The maximum punch knockout stroke is 30 mm, with die knockout strokes ranging from 30 to 155 mm. It supports minimum and maximum cutoff lengths of 50 mm and 200 mm respectively, and can handle thread lengths up to 75 mm.

The BM20 is capable of processing bolts with threads from M16 x 50 mm (DIN 933) up to M20 x 150 mm (DIN 931), as well as bolts without threads up to M24 x 150 mm (DIN 931). The dies measure 122 mm in diameter by 184 mm in length, while the punches are 95 mm in diameter and 176.2 mm in length. The quill diameter is 93.7 mm with a length of 130.5 mm, and the cut-off knife measures 55 mm by 30 mm. The die pitch is set at 139.7 mm.

This machine is powered by a 75 kW motor and has an approximate net weight of 46.7 tons, indicating its heavy-duty industrial capacity. It has undergone partial rebuilding with updated components in mechanical parts such as slides and bearings, the hydraulic system, lubrication and coolant oil systems, pneumatic system, electrical cabling, and control cabinets.

Visually, the BM20 is a large green industrial machine equipped with an electric motor mounted on the side and multiple control panels featuring buttons and warning labels for operational control. Ventilation ducts are connected to the machine, and there are orange bins positioned nearby for collection or storage purposes. The machine shows signs of wear and usage consistent with its industrial application, including some areas that appear dirty or stained, but overall it remains intact and functional for heavy forging tasks.

The following description has been generated using artificial intelligence based on the product information available. It is provided for guidance only and may not reflect all specifications or conditions. Please contact us if you need precise or confirmed details.

Seller's description

Header: Progressive Bolt Makers BM20 Forging Equipment

Manufacturer: National
Model: BM20
Year of Manufacture: 1987
Technical Condition: Good Condition (as-is, where-is)

Diameter Range: 24 mm
Number of Dies: 4
Max. Punch K.O. Stroke: 30 mm
Min/Max Cutoff Length: 50/200 mm
Die K.O. Stroke: 30/155 mm
Max Thread Length: 75 mm
Min. Bolt with Thread: M-16 x 50 DIN 933
Max. Bolt with Thread: M-20 x 150 DIN 931
Max. Bolt without Thread: M-24 x 150 DIN 931

Dies Dimensions (Diameter x Length): 122 x 184 mm
Punches Dimensions (Diameter x Length): 95 x 176.2 mm
Quill Dimensions (Diameter x Length): 93.7 x 130.5 mm
Cut-off Knife Dimensions (Diameter x Length): 55 x 30 mm
Dies Pitch: 139.7 mm

Motor Power: 75 kW
Net Weight (Approx): 46.7 tons

Rebuilding Parts by Part with New Update Components for:
- Mechanical (slides, bearings, etc.)
- Hydraulic System
- Machine Lubrication and Coolant Oil
- Pneumatic System
- Electrical Cords, Cable, Cabinet
- Other Various Components

Please note that this description may have been translated automatically. Contact us for further information. The information of this classified ad are only indicative. We recommend to check the details with the seller before a purchase


Client type Machinery dealer
Active since 2019
Offers online 1120
Last activity April 13, 2026

Seller's description

Header: Progressive Bolt Makers BM20 Forging Equipment

Manufacturer: National
Model: BM20
Year of Manufacture: 1987
Technical Condition: Good Condition (as-is, where-is)

Diameter Range: 24 mm
Number of Dies: 4
Max. Punch K.O. Stroke: 30 mm
Min/Max Cutoff Length: 50/200 mm
Die K.O. Stroke: 30/155 mm
Max Thread Length: 75 mm
Min. Bolt with Thread: M-16 x 50 DIN 933
Max. Bolt with Thread: M-20 x 150 DIN 931
Max. Bolt without Thread: M-24 x 150 DIN 931

Dies Dimensions (Diameter x Length): 122 x 184 mm
Punches Dimensions (Diameter x Length): 95 x 176.2 mm
Quill Dimensions (Diameter x Length): 93.7 x 130.5 mm
Cut-off Knife Dimensions (Diameter x Length): 55 x 30 mm
Dies Pitch: 139.7 mm

Motor Power: 75 kW
Net Weight (Approx): 46.7 tons

Rebuilding Parts by Part with New Update Components for:
- Mechanical (slides, bearings, etc.)
- Hydraulic System
- Machine Lubrication and Coolant Oil
- Pneumatic System
- Electrical Cords, Cable, Cabinet
- Other Various Components

Please note that this description may have been translated automatically. Contact us for further information. The information of this classified ad are only indicative. We recommend to check the details with the seller before a purchase


Specifications

Stroke length 30 mm
Engine Power 75 kW
-------------------
Weight 46700 kg
worked hours
hours under power
state as-is, where-is
At local norms ---------
status
Datasheet National BM20
Last availability date 02/04/2026

Automatic description (AI-Generated)

The National BM20 is a robust forging machine manufactured in 1987, designed for precision metal forming tasks. It features a stroke length of 30 mm, suitable for a variety of forging operations. This machine accommodates a diameter range of 24 mm and includes four dies, allowing for versatile die configurations. The maximum punch knockout stroke is 30 mm, with die knockout strokes ranging from 30 to 155 mm. It supports minimum and maximum cutoff lengths of 50 mm and 200 mm respectively, and can handle thread lengths up to 75 mm.

The BM20 is capable of processing bolts with threads from M16 x 50 mm (DIN 933) up to M20 x 150 mm (DIN 931), as well as bolts without threads up to M24 x 150 mm (DIN 931). The dies measure 122 mm in diameter by 184 mm in length, while the punches are 95 mm in diameter and 176.2 mm in length. The quill diameter is 93.7 mm with a length of 130.5 mm, and the cut-off knife measures 55 mm by 30 mm. The die pitch is set at 139.7 mm.

This machine is powered by a 75 kW motor and has an approximate net weight of 46.7 tons, indicating its heavy-duty industrial capacity. It has undergone partial rebuilding with updated components in mechanical parts such as slides and bearings, the hydraulic system, lubrication and coolant oil systems, pneumatic system, electrical cabling, and control cabinets.

Visually, the BM20 is a large green industrial machine equipped with an electric motor mounted on the side and multiple control panels featuring buttons and warning labels for operational control. Ventilation ducts are connected to the machine, and there are orange bins positioned nearby for collection or storage purposes. The machine shows signs of wear and usage consistent with its industrial application, including some areas that appear dirty or stained, but overall it remains intact and functional for heavy forging tasks.

The following description has been generated using artificial intelligence based on the product information available. It is provided for guidance only and may not reflect all specifications or conditions. Please contact us if you need precise or confirmed details.


About this seller

Client type Machinery dealer
Active since 2019
Offers online 1120
Last activity April 13, 2026

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