Ball Screw Nut I.D. Groove Stone Lapping Machine
BSN-80 model

Machinable Range

O.D.

Lengthφ40~8060~120mm

1.

2.
3.
4.

5.

mm

Machining
lengthMAX70 mmThis model is equipped with an automaticstone changer. By forming lapping stones
outside the machine and loading them into amagazine in advance, operations can beperformed with minimal downtime.
Capable of stone-lapping nut bore screw
grooves up to 42mm in diameter.
Capable of lead angles up to ±20 degrees.
The oscillating axis motion performed by aservo motor enables accurate stone-lappingof spiral ball grooves and other complex
shapes. (Patent pending)
Next-generation design for easy setupchangeover and maintenance for enhanced
functionality.

Workpiece

Stone

Main Specifications
Main spindle
Head stock

Work chuck
Traverse
Oscillation unit

Stone head

Tool in/out
Vertical unit
Angle adjustment

Drive motor
Revolution
Cylinder drive
Drive motor
StrokeFrequency
Drive motor
Amplitude
StrokeDrive motor
StrokeDrive motor
Lead angle
Drive motor

3.5kW AC servo motor
Max. 1,000r/min
2 ﬁngers + key
0.4kW AC servo motor
168mm
Max.1,500fpm、Rough/ﬁnish multi-step change-over
2.0kW AC servo motor±3°271mm
0.4kW AC servo motor
45mm
1.5kW AC servo motor±15°0.2kW AC servo motor

Lift unit
Work carrier

Approach unit
Back&forth drive unit
ChuckerPower

Travel amount
54mm
Drive motor
0.4kW AC servo motor
Travel amount
198mm
Drive motor
0.4kW AC servo motor
Travel amount
398mm
Drive motor
0.4kW AC servo motor
3 ﬁngers, In-out simultaneous chuck

Power Source

3φ AC 200V 60Hz

Control Voltage

AC100V, DC24V

Pneumatic
Machine Dimension
Machine Weight

0.4MPa 450NL/min
1400(W)＊2800(D)＊1800(H)3700kg

Ball Screw Shaft O.D. Groove Stone Lapping Machine
BS-1100 model
Machinable Range

O.D.

Length

φ10~75200 1100mm

mm

Machining
lengthMAX600 mm

Stone

Ball screw
1.
2.
3.
4.
5.

The oscillating axis motion performed by a servo motor enables accurate stone-lapping of spiral ball grooves andother complex shapes. (Patent pending)Capable of stone-lapping ball screw grooves up to 75mm in diameter and 1,100mm in length.
Equipped with dual-axis oscillating stone-lapping units to shorten C/T or perform rough and finishing step processes.
Next-generation design for easy setup changeover and maintenance for enhanced functionality.
An automatic material handling device can be installed as an option, which enables fully automatic continuous
operation that contributes to improved productivity.
Main Specifications
Oscillation
Traverse
Main spindle
Tale stock

Frequency
Amplitude
Drive motor
Travel amount
Drive motor
Revolution
Drive motor
Travel amount
Horizontal drive motor

Max1500fpm±5°（Changevable with servo motor）
2.0kW AC servo motor
620ｍｍ
3.5kW AC servo motor
1000 rpm
3.5kW AC servo motor
50ｍｍ
0.7kW AC servo motorIn/Out separate handlingWork support system
Machining Cycle
PowerConveyor+Carrier+Chucker
Center support+Auto chuck
Full auto cycle

Power Source

3φ AC 200V 60Hz

Control Voltage

DC 24V

Pneumatic

0.4MPa 450NL/min
2900(W)＊2300(D)＊2000(H)mm
6000ｋｇ

Machine Dimension
Machine Weight

Please do not hesitate to inquire for further details, such as processing methods, how to select the machinemodels to achieve your required accuracy, and more economical machining time.

SEIBU JIDO KIKI CO., LTD.
1-23-2 Nanko-kita, Suminoe-ku, Osaka559-0034 JAPANTEL : 81-6-6616-0007 FAX : 81-6-6616-0200
Issue : 2024. Jul.

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