FUJIH65860 NXT H24H24GH24S R-axis bearing
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Product Introduction
FUJI H65860 – NXT H24/H24G/H24S R-Axis Bearing
Overview
The FUJI H65860 is a high-precision R-axis bearing specifically
designed for the rotation axis (R-axis) of the FUJI NXT H24, H24G,
and H24S placement heads. This bearing plays a critical role in
ensuring smooth and accurate rotation of the nozzle shaft, enabling
precise angular alignment during high-speed SMT pick-and-place
operations.
It supports the rotational movement of the nozzle unit, allowing
for fine-tuned positioning of components with rotational
orientation requirements (θ-axis placement).
Key Features
High-Precision Design
Engineered to minimize friction and backlash during rotation,
enhancing placement accuracy.
Optimized for R-Axis Movement
Supports continuous and rapid rotary motion required by the
nozzle's θ-axis during component alignment.
Sealed and Lubricated
Pre-lubricated with high-grade grease and sealed for protection
against dust, flux, and moisture.
Direct Compatibility
Designed specifically for FUJI NXT H24, H24G, and H24S heads — no
modification required.
Technical Specifications
| Parameter | Description |
| Part Number | H65860 |
| Component Name | R-Axis Bearing |
| Applicable Heads | FUJI NXT H24 / H24G / H24S |
| Axis Type | R-axis (胃-axis, rotational) |
| Material | Hardened steel / hybrid ceramic (varies by revision) |
| Lubrication | Factory-sealed grease |
| Installation | Press-fit or mounted within R-axis housing of the head |
| Function | Supports smooth nozzle rotation for alignment during placement |
Applications
Used in FUJI NXT high-speed placement heads for rotational
alignment.
Supports precise angular positioning of nozzles for non-symmetric
components.
Critical for achieving high-speed, high-accuracy SMT assembly
performance.
Maintenance Tips
Although sealed, monitor for unusual noise or resistance during
head rotation.
Replace if signs of wear, vibration, or R-axis error occur.
Avoid contamination during head disassembly — always follow
cleanroom protocols.
Related Accessories for FUJI H65860 R-Axis Bearing
| Accessory Name (EN) | Description |
| R-Axis Shaft / Rotary Shaft | The main rotating shaft where the H65860 bearing is installed to
support nozzle rotation. |
| Nozzle Holder / Nozzle Shaft Sleeve | Interfaces with the R-axis bearing to hold the nozzle during
rotation and placement. |
| Bearing Housing (R-axis Block) | Precision-machined mount that holds the R-axis bearing in correct
alignment inside the head. |
| R-Axis Encoder / Sensor | Monitors rotational position of the nozzle for angular placement
correction. |
| Locking Ring / Retaining Clip | Mechanically secures the bearing inside the housing or shaft. |
| Preload Spring / Washer | Applies axial pressure to eliminate bearing play and ensure smooth
rotation. |
| Nozzle Rotation Motor (胃 Motor) | Drives the R-axis shaft via belt or direct coupling; works in
tandem with the bearing. |
| Lubrication Grease Kit (if serviceable) | For re-lubricating open or semi-sealed bearings (if applicable). |
| Dust Shield / Spacer Ring | Prevents flux, dust, or debris from contaminating the bearing
during operation. |
| R-Axis Assembly Jig / Tool | Specialized tool for installing/removing the bearing without
damaging the shaft or housing. |
These components together ensure stable, precise, and long-lasting
performance of the R-axis rotation system in FUJI H24-series heads.
Related Part Numbers for FUJI H65860 R-Axis Bearing
| Component Name (EN) | FUJI Part Number | Description |
| R-Axis Bearing | H65860 | Main precision bearing for nozzle rotation |
| R-Axis Shaft | H65863 (example) | Shaft that passes through the R-axis bearing |
| Nozzle Holder / Shaft Sleeve | H65864 (example) | Sleeve that connects nozzle unit to rotary shaft |
| Bearing Housing / R-Axis Block | H65861 (example) | Mounting unit for the R-axis bearing inside head |
| Retaining Ring / Snap Ring | XH00175 (example) | Holds bearing in place inside housing |
| Preload Spring / Washer | XH00289 (example) | Ensures tight bearing fit, reduces backlash |
| 胃-Axis Motor (Nozzle Rotation Motor) | H65900 (example) | Motor responsible for R-axis rotation |
| Encoder Sensor (胃 Position Feedback) | H65902 (example) | Sensor detecting nozzle rotational angle |
| Dust Shield / Spacer Ring | XH00315 (example) | Protects bearing from contamination |
| R-Axis Assembly Jig | XJ90123 (example) | Tool used for safe bearing installation/removal |
Note: Items marked with (example) are commonly used with
H24/H24G/H24S heads. Actual part numbers may vary by sub-model or
production batch. Always verify with FUJI official parts
documentation or supplier.
FAQ Guide – FUJI H65860 NXT H24/H24G/H24S R-Axis Bearing
1. What is FUJI H65860?
Answer:
The H65860 is a high-precision R-axis bearing used in the FUJI NXT
H24, H24G, and H24S placement heads. It supports the rotational
(θ-axis) movement of the nozzle holder, ensuring smooth and
accurate angular positioning of components during pick-and-place
operations.
2. What is the R-axis (θ-axis) in FUJI heads?
Answer:
The R-axis, also known as the θ-axis, refers to the rotation of the
nozzle to correctly align components based on their angular
orientation. The bearing ensures this rotation is stable,
low-friction, and accurate, even during high-speed operations.
3. What are the symptoms of a failing R-axis bearing?
Answer:
Nozzle rotation becomes rough, slow, or jerky
Abnormal noise (grinding or squealing) during rotation
Reduced placement accuracy, especially for angular alignment
Vibration or runout in the nozzle tip
θ-axis feedback error or rotation misalignment
4. When should the H65860 be replaced?
Answer:
When showing any of the above symptoms
After extended machine uptime (as part of preventive maintenance)
If contamination (dust, flux, oil) is suspected
After disassembling the R-axis for motor or encoder repair
5. Can it be replaced individually?
Answer:
Yes. The R-axis bearing (H65860) can be individually replaced.
However, it requires:
Proper disassembly of the R-axis block
Use of a precision press-fit tool or jig
Avoiding misalignment or stress during reinstallation
Recalibration of θ-axis (if encoder or motor is disturbed)
6. What tools or accessories are needed for replacement?
| Tool / Accessory Name | Description |
| R-axis assembly/disassembly jig | Prevents damage during bearing press-in/out |
| Anti-static tweezers or gloves | Prevents contamination or ESD damage |
| Bearing grease (if required) | For re-lubrication if not sealed type |
| Optical alignment tool | To verify 胃-axis accuracy post-replacement |
7. What parts work with the H65860 bearing?
| Part Name | Part Number (Example) | Description |
| R-axis Bearing | H65860 | Main rotational bearing for nozzle rotation |
| R-axis Shaft | H65863 (example) | Shaft supported by the bearing |
| Nozzle Shaft Sleeve | H65864 (example) | Links bearing to nozzle |
| Bearing Housing Block | H65861 (example) | Holds the bearing inside head assembly |
| 胃-Axis Motor | H65900 (example) | Drives rotation of the nozzle |
| 胃-Axis Encoder | H65902 (example) | Feedback system for rotation position |
| Retaining Clip / Ring | XH00175 (example) | Holds bearing in place inside housing |
| Preload Washer / Spacer | XH00289 (example) | Eliminates rotational play in bearing |
8. How to maintain the H65860 bearing?
Answer:
Do not lubricate if sealed — sealed bearings are maintenance-free
For serviceable types, use manufacturer-approved grease
Clean surrounding area to prevent foreign object contamination
Avoid applying excessive force to bearing during nozzle cleaning
Replace if rotation feels uneven or θ errors increase
9. How often should the bearing be inspected?
Answer:
Every 6 to 12 months, depending on production volume and
environment
After any incident involving nozzle collision or vibration
During regular placement head overhauls or preventive maintenance
cycles
10. Where can I purchase H65860?
Answer:
FUJI official service centers or authorized SMT parts distributors
Ensure original part number H65860 for guaranteed compatibility
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