Specifications of 4th Axis: Center height: 65mm(2.56"); Total height:; 105mm(4.13"); Angle: 0.036°/step ; Gearbox model: 17-50; Reduction ratio: 50:1; Base Material: Made of Aluminum alloy; Size: 260x110x105mm(10.2x4.34x4.13"); 4th Axis Weight: 7KG/15.4 LB 100mm 4 Jaw Chuck: Chuck Type: K12-100 4-Jaw self-centering chuck; Diameter:100mm; Max input torque: 60N.m; Max Speed: 3500R/min; External jaw clamping range: 30-80mm(1.18-3.15").; Internal jaw clamping range: 2-30mm(0.08-1.18"); Internal jaw jamming range: 30-90mm(1.18-3.54"); With four Anti-claw and Wrench Specifications of MT2 Tailstock: Morse Taper 2 Live Center Movable MT2 Tailstock; Center Height: 65mm(2.56"); Expansion stroke: 45mm(1.77"); Stretch distance: 50mm(1.97"); Top tip: Activity type; With Axial locking wrench for tailstock; Exquisite workmanship,Durable,Stable performance,Sturdy and Wear-resistant; Weight: 2.5KG/5.5 LB With Nema23 Stepper Motor: Motor Type: Hybrid Stepper; Phase: 2-phase; Motor Size: 57x57x56mm; Step Angle: 1.8°; Holding Torque: 12kg.cm/178oz-in/1.2Nm; Rated Current: 3A; Shaft diameter: 8mm; Number of Leads: 4-wires Gapless Harmonic Rotation 4th Axis: Model: K12-100mm; Chuck Type: 100mm 4 Jaw Chuck; Adopting a harmonic gapless gearbox,the product has higher precision, no backlash, high rigidity, high efficiency, stable structure, smooth operation, made of high quality aluminum alloy,ant rust coating process, fine workmanship, excellent forging process, and maximizes service life

Package include:

1Set Rotary 4th Axis Gapless Harmonic K12-100mm with Nema23 stepper motor with 4 jaw chuck

1Pcs 65mm Tailstock

1Set of Anti-claw and wrenches

Reducing Ratio 50:1

Descriptions:

Fourth axis (A axis, Rotational Axis,CNC dividing head) gapless harmonic reducer gearbox

Chuck type: K12 100mm 4 jaw centering chuck

Center height: 65mm

Total height: 115mm

Angle: 0.036°/ step

Gear box output shaft diameter: 25mm

Weight: 6.8KG

The fourth axis parameter settings:

The Mach3 system settings:  the pulses for 1  required:

( the motor 1 Circle of pulse number × the drive of subdivision number × reduction ratio) ÷ 360 degrees

 For example, the two-phase nema23 motor, the ubdivision number 16, the reduction ratio 50:1

 (200 × 16 × 50) ÷ 360 = 444.44444444)

Ncstudio system settings: the angle of a pulse walking:

360 ÷ (the motor 1 Circle of pulse numberr × × the drive of subdivision number × reduction ratio)

For example: the two-phase nema23 motor, the breakdown of the number 16, reduction ratio 50:1

360 ÷ (200 × 16 × 50) = 0.00225

Tailstock:

Center Height: 65mm

Stretch distance: 50mm

Top tip: Activity type

Nema23 steppper motor

Step Angle: 1.8 deg. 

Holding Torque: 1.2Nm

Phase Resistance: 1ohms 

Current:3A 

Inductance:2.8mH+/-20%

Frame Size: 57x57x56 mm 

Body Length: 56mm 

Lead: Red: A+,Green:  A-,Yellow: B+, Blue: B-