GE A06B-1501-B105

Product Name: Fanuc A06B-1501-B105 — DC Servo Motor (Beta Series)

Product Introduction:
The A06B-1501-B105 is a Fanuc DC servo motor from the Beta series (A06B-1501 series). It is a brush-type DC servo motor with built-in tachometer generator and incremental encoder. This motor is used in older Fanuc CNC systems (0, 6, 10, 11, 15, 16, 18, 21 series controls).

Category: GE

Description

Model Series: Fanuc Beta Series — A06B-1501

Technical Specifications:

Parameter	Value
Motor Type	DC Servo Motor (Brush-type)
Rated Output Power	1.5 kW
Rated Speed	2,000 rpm
Rated Torque	7.2 Nm
Max Speed	3,000 rpm
Peak Torque	21.6 Nm (3× rated)
Encoder	Built-in incremental (1,000 pulses/rev, differential)
Tachometer	Built-in DC tachogenerator (45V/1,000rpm)
Insulation Class	Class F (155°C)
Protection Rating	IP54
Cooling	Self-ventilated (built-in fan)
Shaft Diameter	40 mm
Shaft Length	60 mm (with keyway)
Weight	22 kg
Dimensions (W×H×L)	190 × 190 × 280 mm (approx.)
Connector	A06B-6047 series (20-pin)

Functional Features:

Built-in incremental encoder (1,000 P/R) for position feedback
Built-in tachogenerator for speed feedback
Brush-type commutation (requires periodic brush replacement)
Compatible with Fanuc 6/10/11/15/16/18/21 series servo amplifiers (A06B-6050 to A06B-6090 series)
Compact design for axis drive applications

Performance Parameters:

Acceleration Torque: 21.6 Nm (peak, 0.5s)
Moment of Inertia: 0.045 kg·m²
Thermal Time Constant: 30 minutes
Operating Temp: 0°C to +40°C
Storage Temp: -20°C to +60°C
Humidity: 20%–80% RH (no condensation)

Structural Features:

Cast iron housing with aluminum end caps
40mm shaft with keyway (8 × 7 × 35mm)
20-pin connector (power + encoder + tachometer)
IP54 with connector cap
Foot mounting: 4×M8 holes

Working Principle:
Brush-type DC motor. The servo amplifier supplies DC current to the armature windings via carbon brushes and commutator. The built-in tachogenerator provides analog speed feedback. The built-in incremental encoder provides digital position feedback. The amplifier performs 3-loop control (current, speed, position) at 2 kHz sampling rate.

Advantages:

Lower cost than brushless Alpha series
Built-in encoder and tachometer — no separate components needed
Proven design with decades of field service
Direct compatibility with legacy Fanuc controls

Applicable Industries:

Retrofit CNC machines (Fanuc 0/6/10/11/15/16/18/21)
CNC lathes (older models)
CNC milling machines (older models)
EDM machines
Wire-cut EDM

Installation Requirements:

Mount with 4×M8 bolts, torque 15 Nm
Align coupling within 0.05mm TIR
Use Fanuc-specified motor cable (max 30m recommended)
Set motor model number in CNC parameters (parameter 1815)
Verify encoder signal polarity before operation

Usage Precautions:

Brushes require replacement every 2,000–4,000 hours
Do not run motor without tachometer connected — amplifier will fault
Keep commutator clean — use contact cleaner during maintenance
Do not exceed 3,000 rpm continuous
Store in dry environment to prevent brush sticking

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