FUJIH4897A V12 H24S H08 H04S working head bearing
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Product Introduction
FUJI H4897A – V12 / H24S / H08 / H04S Working Head Bearing
Overview
The FUJI H4897A is a precision rotary bearing used in the working heads of FUJI NXT-series placement machines, including the V12, H24S, H08, and H04S models. This bearing is essential for ensuring smooth rotational movement and mechanical stability in the head's internal axis, particularly in the R-axis (θ-axis) or Z-axis (vertical motion), depending on the head model.
It plays a critical role in maintaining accurate nozzle movement, component alignment, and long-term durability under high-speed placement conditions.
Key Features
High-Precision Engineering
Designed for low-friction, high-speed rotational support in SMT pick-and-place head mechanisms.
Smooth & Stable Motion
Supports reliable Z-axis or R-axis motion for nozzle or head components with minimal backlash.
Sealed & Lubricated
Built-in lubrication and seal structure to resist dust, oil, and flux contamination in industrial environments.
Multi-Model Compatibility
Compatible with multiple FUJI head types (V12, H24S, H08, H04S) for flexible maintenance use.
Applicable Models
| Head Model | Function of Bearing |
| V12 | Nozzle shaft / Z-axis support |
| H24S | Rotary R-axis (胃-axis) or internal shaft bearing |
| H08 | Precision movement for nozzle actuation |
| H04S | Used in internal rotary mechanism |
Technical Specifications
| Parameter | Details |
| Part Number | H4897A |
| Bearing Type | High-precision miniature or angular contact (model-specific) |
| Material | Hardened steel or hybrid ceramic (varies by revision) |
| Seal Type | Pre-lubricated and sealed |
| Mounting Location | Inside working head (shaft assembly or rotary block) |
| Usage | R-axis, Z-axis, or nozzle rotation stability |
Applications
Nozzle rotation (θ-axis) or vertical movement (Z-axis) in high-speed pick-and-place heads
Ensures accurate, repeatable movement of the nozzle for component pickup and placement
Used during head assembly, refurbishment, or precision maintenance
Maintenance Notes
Bearings are not serviceable; replace when noise, friction, or rotation issues occur
Always use cleanroom conditions when replacing internal head components
Avoid contamination during handling—use ESD-safe gloves/tools
Test head accuracy (especially Z or θ-axis) after reassembly
Related Accessories for FUJI H4897A Working Head Bearing
| Accessory Name (EN) | Description |
| Nozzle Shaft / Pickup Shaft | Shaft component supported by the H4897A bearing to allow precise Z-axis or rotary motion. |
| R-axis / Z-axis Motor | Drives the movement of the shaft or bearing-supported component (rotation or vertical motion). |
| Bearing Housing / Block | Precision-machined part inside the head that holds the bearing in correct alignment. |
| Preload Spring / Washer | Applies controlled pressure to the bearing to eliminate play and maintain stable rotation. |
| Retaining Ring / Snap Ring | Secures the bearing in place inside the head housing. |
| Solenoid Valve (e.g., H11352) | Controls air for related pneumatic functions that work with bearing-supported motion. |
| Z-axis Encoder / 胃-axis Sensor | Provides feedback on movement accuracy of the bearing-supported shaft. |
| Nozzle Holder / Adapter | Connects the bearing-supported shaft to the nozzle unit. |
| Internal Air Tubing (PU 4mm / 3mm) | Delivers air to actuators controlled by or related to bearing-driven motion. |
| Installation/Extraction Tool Set | ESD-safe tools and bearing press jigs used to install or remove bearings without damage. |
These accessories ensure the bearing operates precisely and reliably as part of the motion system inside FUJI working heads like V12, H24S, H08, and H04S.
Related Part Numbers for FUJI H4897A Working Head Bearing
| Component Name (EN) | FUJI Part Number (Example) | Description |
| Working Head Bearing | H4897A | Main high-precision bearing used in Z-axis or R-axis rotation inside V12, H24S, H08, H04S heads |
| Nozzle Pickup Shaft (Z-axis Shaft) | H4898A (example) | Shaft supported by H4897A bearing for nozzle movement |
| Bearing Housing / Rotary Block | H4900A (example) | Mounting base for bearing in the head assembly |
| Retaining Ring / Snap Ring | XH00175 (example) | Holds bearing in place within the housing |
| Preload Washer / Spacer | XH00289 (example) | Used to apply pressure on bearing to reduce backlash |
| Z-axis Motor (for V12 or H08) | H61005 (example) | Drives vertical nozzle motion supported by the bearing |
| 胃-axis Motor (for H24S or H04S) | H65900 (example) | Provides rotary movement on R-axis, interacting with the bearing |
| Solenoid Valve (V12 head related) | H11352 | Controls nozzle actuation in systems where bearing is installed |
| Nozzle Holder / Adapter Unit | AA4PA00 (example) | Connects to shaft driven by bearing-supported motion |
| Head Control PCB | AA1C2D00 (example) | Sends electrical signals to motors controlling bearing-supported shafts |
Note: Items marked as (example) are commonly used in V12, H24S, H08, or H04S heads, but actual part numbers may vary slightly based on production batch or sub-model. Always verify with the FUJI official parts list or your equipment supplier for exact compatibility.
FAQ Guide – FUJIH4897A Working Head Bearing
Applicable Models: V12 / H24S / H08 / H04S Working Heads
Part Number: FUJIH4897A
Component Name: Working Head Bearing
1. What is FUJIH4897A used for?
The FUJIH4897A is a precision bearing used in the working heads of Fuji NXT pick-and-place machines (specifically models V12, H24S, H08, and H04S). It supports smooth rotation and precise positioning of the working head during component placement.
2. Which machine heads use this bearing?
V12 Working Head
H24S High-Speed Head
H08 Standard Working Head
H04S Small-Component Head
3. What are the symptoms of bearing wear or failure?
Irregular or noisy head movement
Reduced placement accuracy
Increased vibration
Positioning or rotation errors
4. How often should the bearing be replaced?
Typically after 8–12 months of continuous operation, depending on usage conditions.
Recommended replacement during preventive maintenance schedules or when wear signs appear.
5. Can this bearing be replaced individually?
Yes, the FUJIH4897A can be replaced as a single unit without replacing the entire head. However, professional disassembly and reassembly are required to avoid damage.
6. Tools required for replacement
Torque driver
Bearing puller (if applicable)
Anti-static gloves
Cleanroom-grade lubricant (if needed)
Micrometer / dial gauge for runout checking
7. Related Parts
FUJIH11352 – Solenoid valve for V12 head
FUJIH65860 – R-axis bearing for H24H24GH
FUJIPP0341 – H12S Honeycomb unit
8. Storage & Handling
Store in original anti-static packaging
Avoid exposure to dust, humidity, or temperature extremes
Handle with non-metal tweezers or gloves
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