BL-4024FM - High Rigidity Horizontal Boring Mills

X-axis travel : 78.74" / 118.11" / 157.48"

Y-axis travel : 70.86" / 94.48"

Z-axis travel : 51.18"

W-axis travel : 23.62"

Table Size ( X x Y ) : 62.99" x 70.86"

Max. table load : 26,400 lb

Spindle speed : 2,400 / 6,000 rpm

Spindle motor : 30 / 35 HP

( cont. / 30 min. )

Tool magazine capacity : 40 T

Machine weight : 66,200 ~ 89,300 lb

High Rigidity Horizontal Boring Mills

Introducing YAMA SEIKI with mature manufacturing abilities and advanced technology skills. The BL series combine high rigidity structure, heavy duty load capacity rotary table and a high torque spindle ( BL-S ) or high speed spindle ( BL-FM ) along with our professional assembly and hand scraping skills. BL series can easily overcome most stringent requirements of not only deep hole boring but high precision mold milling which meet your various needs for today and the future.

With years of innovation and manufacturing experience on horizontal boring mills, combined with the latest machining center technology, to maximize the mechanical performance and the brand image as a professional boring mills manufacturer.

Modular spindle design, BL-S quill type 2-steps gear box spindle continuous torque can be 1,308 Nm ( 960 ft-lb ) ; BL-FM ram type built-in spindle speed up to 8,000 rpm

High damping, low friction oil floating design working table provide maximum table load capacity at 15,000 kg ( 33,000 lb ) ( Opt. )

Balanced arrangement of tool magazine and headstock on the column to ensure excellent positioning accuracy

Horizontal boring mills provide better chips removal ability

BL series' precision quality and superior performance are designed to meet aerospace industry, transportation equipment, energy industry large parts machining and mold machining needs.

Enclosure splash guard as option can avoid chips and coolant splash out of machine to provide safe and clean working environment.

Standard fully enclosed operator room moves along with column to protect operator against hazard and the ease of use.

To ensure the machine ultimate performance and high quality, every machines should pass heavy cutting test before shipping.

High Rigidity Structure

Through Finite Element Method ( FEM ) analysis, light-weighted structure yet optimized design are achieved to ensure best machine rigidity.

The heavily ribbed bed, column, table, head stock and saddle are all made by "MEEHANITE" casting, a fully annealing process and aging have been implemented to ensure best stability for long term usage.

High precision and heavy-duty feed system.

Two augers and caterpillar type chip conveyor as standard to ensure chips removal efficiency and cooling effect.

BL-S series Quill Type Spindle - Parts Processing

Quill diameter Ø 120 mm ( Ø 4.72" ), W-axis travel can extend to 600 mm ( 23.62" ).

Max. spindle speed at 2,400 rpm with 2-step gear box which can provide maximum torque output at 1,308 Nm ( 960 ft-lb ) under 189 rpm.

W-axis feed system combined ball screw with linear guide ways, W-axis extension can be determined according to different kinds of processing requirement.

All series is equipped with a spindle oil cooler and cooling jacket, the temperature-regulated volume of cooling oil automatically maintain the temperature of bearings, motor, and gears within precisely defined range which effectively reduce the spindle thermal deformation thus achieving higher machining accuracy.

BL-FM series Ram Type Spindle - Mold Processing

Strong ram with cross section at 480 x 470 mm ( 18.89" x 18.49" ), W-axis travel can extend to 600 mm ( 23.62" ).

Max. spindle speed at 6,000 rpm ( 8,000 rpm as option ) with built-in spindle which can provide maximum torque output at 600 Nm ( 440 ft-lb ) under 350 rpm.

W-axis feed system combined ball screw with linear guide ways, W-axis extension can be determined according to different kinds of processing requirement.

High Reliability Tool Exchange System

Standard 40T ATC system, 60 tools magazine as option.

Max. tool load at 55 lb ( 25 kg ), maximum tool magazine load at 1,300 lb ( 600 kg ) which can meet different kinds of boring and milling condition.

High Performance Rotary Table

High damping, low friction oil floating design rotary table along with high rigidity fully support base provide maximum table load capacity at 12,000 kg ( 15,000 kg lb as option ) [ 33,000 lb ( 26,500 as option ) ].

B-axis utilizes a closed loop feedback rotary encoder system achieves indexing resolution at 0.001˚. Simultaneously, the disc type holing mechanism provides excellent and stable positioning accuracy.