FUJI SAM6821 XPF R-axis motor
Our company has been in operation for 11 years and will definitely
be your best choice with guaranteed quality and fast delivery
FUJI SAM6821 – XPF R-Axis Motor (Rotation Axis Motor)
Overview
The FUJI SAM6821 is an AC servo motor designed to drive the R-axis
(rotational axis) of the placement head in FUJI XPF series
high-speed SMT machines. It enables precise component orientation
control by rotating the nozzle or placement unit before mounting.
Key Features
High-precision rotational control for accurate component angle
adjustment
Fast response time, ideal for high-speed placement heads
Equipped with a built-in encoder for closed-loop feedback and angle
precision
Built for durability in high-duty-cycle SMT production environments
Compact design for integration into placement head assemblies
Application
Used in FUJI XPF series pick-and-place machines:
XPF, XPF-L, XPF-W
Controls the R-axis (rotation) of heads such as H01, H04, H08, H24
Ensures proper orientation of QFPs, connectors, and other
angular-sensitive components
Typical Specifications
| Specification | Details |
| Part Number | SAM6821 |
| Motor Type | AC Servo Motor |
| Controlled Axis | R-axis (Rotation Axis) |
| Encoder Type | Incremental / Absolute (FUJI standard) |
| Rated Voltage | 200–240V AC (driver-dependent) |
| Mounting Style | Direct head-mounted |
| Interface | FUJI proprietary servo driver board |
Benefits
Ensures precise component orientation before placement
Reduces misalignment, rotation error, and placement defects
Works seamlessly with FUJI’s advanced placement algorithms
Designed to integrate directly with FUJI’s control architecture
Improves throughput and placement yield in high-mix environments
Related Components
| Component | Part Number (Example) | Function |
| R-Axis Motor | SAM6821 | Drives rotational movement of the placement nozzle |
| Servo Driver Board | XK04032 / XK04120 | Provides power and control signals to the motor |
| Encoder Feedback Cable | XH01270 | Transmits position data to the controller |
| Power Cable | XH01120 | Connects motor to power supply |
| R-Axis Coupling/Linkage | XM02390 | Mechanically links motor to rotating nozzle unit |
| Mounting Bracket | XM02630 | Holds motor in place inside head assembly |
| Limit / Home Sensor | XM03150 | Detects R-axis origin or limits (optional) |
Related Accessories – FUJI SAM6821 XPF R-Axis Motor
| Component | Part Number (Example) | Description |
| R-Axis Servo Driver Board | XK04032 / XK04120 | Drives and controls the SAM6821 R-axis motor |
| Encoder Feedback Cable | XH01270 | Connects the encoder signal from motor to the control system |
| Power Supply Cable | XH01120 | Delivers power from driver board to R-axis motor |
| Motor Mounting Bracket | XM02630 | Supports and secures the R-axis motor within the placement head
assembly |
| R-Axis Coupling / Shaft Link | XM02390 | Connects the motor shaft to the nozzle rotation mechanism |
| R-Axis Rotation Shaft | XM02850 / XM02720 | Mechanically transmits rotation to the nozzle or component gripper |
| Limit Sensor / Origin Sensor | XM03150 | Detects home position or rotation limits for the R-axis |
| R-Axis Locking Gear | XM02980 | Assists in rotational locking or detent functionality during
placement |
| Cooling Fan (if applicable) | XH01431 | Maintains thermal stability during continuous operation |
| Protective Cover | XM03090 | Shields motor and rotating parts from debris and mechanical damage |
Optional / Supporting Accessories
| Accessory | Function |
| Alignment Jig | Used during motor or head installation for precision setup |
| Vibration Damper Pad | Reduces mechanical noise and improves placement stability |
| Rotation Sensor Calibration Tool | For adjusting or testing R-axis encoder accuracy |
These accessories ensure stable, precise, and high-performance
operation of the SAM6821 motor within FUJI’s advanced SMT systems.
FUJI SAM6821 – R-Axis Motor Related Part Numbers
| Component Description | Part Number | Remarks |
| R-Axis Servo Motor | SAM6821 | Main motor driving the rotation axis of the placement head |
| R-Axis Servo Driver Board | XK04032 | Controls the R-axis motor operation |
| Alternate Driver Board (varies by unit) | XK04120 | Used in some XPF head models |
| Encoder Feedback Cable | XH01270 | Sends encoder signals from the motor to controller |
| Power Supply Cable | XH01120 | Delivers power to the R-axis motor |
| Motor Mounting Bracket | XM02630 | Mechanically mounts motor inside the head unit |
| R-Axis Coupling (Motor to Shaft) | XM02390 | Links motor shaft to rotating elements |
| R-Axis Shaft / Gear | XM02850 | Transfers motor rotation to the nozzle or tool |
| Limit / Origin Sensor (R-Axis) | XM03150 | Detects motor’s home position |
| Cooling Fan (Optional) | XH01431 | Provides thermal protection if needed |
| Protective Motor Cover | XM03090 | Prevents contamination or damage to motor assembly |
Note: Part numbers may vary slightly depending on the head type
(e.g., H01, H08, or H24) and machine version (XPF, XPF-W, etc.).
FAQ Guide – FUJI SAM6821 XPF R-Axis Motor
General Information
Q1: What is the FUJI SAM6821 motor used for?
A: The SAM6821 is an AC servo motor designed for the R-axis
(rotational axis) in FUJI XPF series SMT machines. It rotates the
placement nozzle to align components to the correct orientation
before placement on the PCB.
Q2: Which machines use the SAM6821 motor?
A: The motor is used in FUJI XPF, XPF-L, and XPF-W placement
machines. It is installed in heads such as H01, H04, H08, and H24
that require R-axis (nozzle rotation) control.
Operation and Features
Q3: What does the R-axis control?
A: The R-axis adjusts the rotation angle of the placement nozzle to
match the programmed orientation of the component on the PCB.
Q4: Is this motor a closed-loop system?
A: Yes. The SAM6821 includes an internal encoder that provides
real-time position feedback to the controller, enabling
high-precision closed-loop control of rotation.
Q5: What components work with the SAM6821?
| Component | Part Number (Example) | Function |
| Servo Driver Board | XK04032 / XK04120 | Sends power and control signals |
| Encoder Cable | XH01270 | Transmits angle feedback to the controller |
| Power Cable | XH01120 | Delivers power from the driver |
| Shaft Coupling | XM02390 | Mechanically connects motor to nozzle shaft |
| Mounting Bracket | XM02630 | Holds motor inside the head assembly |
| Origin Sensor / Limit Sensor | XM03150 | Detects R-axis home position |
Maintenance & Troubleshooting
Q6: What regular maintenance is required?
Inspect cables (power and encoder) for wear or damage
Ensure motor mounting is secure and aligned
Clean the head area of dust and debris
Check R-axis rotation accuracy during regular calibration
Q7: Common R-axis motor problems and solutions
| Problem | Cause | Solution |
| No rotation | Cable disconnection, driver fault | Check wiring and replace driver if needed |
| Misaligned rotation | Encoder error or mechanical slippage | Recalibrate or tighten couplings |
| R-axis overrun or limit alarm | Faulty limit sensor or bad encoder data | Replace sensor or recalibrate encoder |
| Motor vibration or noise | Mechanical misalignment or bearing wear | Re-align motor or replace motor unit |
Best Practices
Always power off the machine before replacing the motor or cables
Use only genuine FUJI parts to ensure compatibility
Perform axis calibration after motor replacement or repair
Maintain a clean operating environment to protect motor integrity
Log and monitor R-axis alarms for trend analysis and preventive
maintenance
pcb magazine loader,pcb loader,smt loader,pcb loader machine,bare
board loader,pcb loader unloader,pcb magazine unloader,smt
conveyor,pcb inspection conveyor,pcb conveyor,pcb magazine,pcb
magazine rack,smt magazine rack,magazine pcb,smt magazine,smd
magazine,pcb storage racks,pcb container,ESD storage racks,esd pcb
racks,smd counter machine,reel counter machine,component counting
machine,smd component counter ,smd parts counter ,nozzle cleaning
machine
We can do for you:
1. We provide fulL SMT solution for you
2. We provide core technology with our equipments
3. We provide the most professional tech service
4. We have wealthy experience on SMT factory setup
5. We can solve any question about SMT
Contact:
CNSMT Electronics Equipment Co,.LTD
Email: info@smtlinemachine.com
www.smtlinemachine.com
Mb/whatsapp/wechat:+8613537875415
SKYPE:smtdwx
