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RF-FO33F GLarge Double Arm Microscope Base
₨5,000
RF4 RF-FO33E, FO33F, FO33G Large Double Arm Microscope Stand
The RF4 RF-FO33E, RF-FO33F and RF-FO33G share the RF-FO33 large double arm platform. A duplex bearing joint, 360° rotation and a mechanical gear zoom lock keep your microscope steady over dead phone boards, reballing jobs and hardware fault tracing. The heavy base absorbs bench vibration, so the image holds still when your iron touches the pad. You get a firm viewing position for IC change karna, jumper lagana and board cleaning. The arms swing the head clear when you need the bench open.
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Description
Large Double Arm Microscope Stand for PCB Repair Benches
A large double arm microscope stand decides how steady your image stays during micro-soldering. The RF4 RF-FO33E, RF-FO33F and RF-FO33G build on the RF-FO33 platform. It uses two articulated arms, a duplex bearing pivot and a heavy base. You get a mount that stays put while you work under magnification, even on long shifts.
Duplex Bearing Microscope Base: Where the Stability Comes From
The FO33 platform replaces the thin pole and single clamp of entry-level stands with a large double-armed base. The swing arm and base work together, so touching the bench does not shake the view. A duplex bearing at the pivot keeps rotation smooth through the full 360° sweep.
The base weighs roughly 9 kg. That mass matters when you work with a hot air gun or a heavy soldering iron near the board. A light stand walks across the bench. This one stays where you set it.
RF4 also lists a mechanical gear zoom lock knob on the FO33 platform. It holds the zoom at a fixed step, so you stop re-adjusting magnification between boards.
Column, Lens Aperture and Focus Travel
RF4 specifies the FO33 platform with a Φ32mm column and a Φ76mm lens aperture. The center distance is 155mm and the lifting range is 50mm. The base measures 250 x 180 mm and the pillar stands 365 mm tall.
Check these figures against your microscope head before you order. A head with a Φ76mm focus bore fits directly. Trinocular stereo heads are the standard match in mobile repair shops, because the third port feeds a camera and monitor.
Using It as a Microscope Stand for PCB Repair
Your repair bench runs through a repeatable sequence: inspect, clean, reflow, reball, test. This stand supports the inspection and rework stages, where you need both hands free and a stable image.
Under magnification, you check pad damage after a lifted IC, trace breaks near a charging port and solder bridges on fine-pitch parts. For a dead phone with no current draw, the stand lets you scan the board slowly and trace a hardware fault visually before you reach for the multimeter.
During reballing, you align the stencil and confirm each ball seats correctly. A wobbling head makes that check unreliable. The double arm lets you pull the microscope away for hot air work, then bring it back to the same spot without losing your position.
Pair it with a hot air station, a soldering station and a PCB holder from the same bench setup. If you outgrow a manual-focus head, move up to a trinocular head with a camera and monitor for shared viewing and training.
Choosing Between the RF-FO33E, FO33F and FO33G
RF4 lists these three as separate model codes on the same FO33 platform. Confirm the microscope head and camera configuration of your chosen variant with RF4 Tools before you order, so the kit matches your bench. The base geometry, bearing layout and rotation range stay consistent across the FO33 platform.
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Key Features
- Large double-armed base for stable support under a mounted head
- Duplex bearing pivot for smooth rotation
- 360° rotation of the arm assembly
- Mechanical gear zoom lock knob, as listed by RF4 for the FO33 platform
- Heavy base of roughly 9 kg that resists bench vibration
- Φ32mm column and Φ76mm lens aperture for standard stereo heads
- 50mm lifting range for focus adjustment
- Swing-away arm that clears the bench for hot air and soldering work
Specifications
| Brand | RF4 |
|---|---|
| Model | RF-FO33E, RF-FO33F, RF-FO33G |
| Category | Microscope Stand / Large Double Arm Base |
| Compatibility | Stereo and trinocular microscope heads with a Φ76mm lens aperture on a Φ32mm column |
| Technology | Double articulated arm with duplex bearing pivot and mechanical gear zoom lock |
| Dimensions | Base 250 x 180 mm, pillar 365 mm |
| Weight | Base approximately 9 kg |
Common Repair Uses
- Inspecting pads and traces after a lifted or removed IC
- Aligning stencils and checking ball seating during BGA reballing
- Tracing a hardware fault on a dead phone board
- Jumper lagana on broken traces and damaged pads
- Checking solder joints after IC change karna
- Cleaning flux and corrosion from liquid-damaged boards
- Inspecting connector pins for charging issue and display problem faults
- Training technicians at a shared bench with camera output
Compatible Devices
- Trinocular stereo microscope heads with a Φ76mm lens aperture
- Stereo microscopes that mount on a Φ32mm column
- Camera-ready trinocular heads with a CTV or C-mount adapter
- Smartphone logic boards from any brand
- Tablet motherboards
- Small-device PCBs within arm reach
- Flex connectors and board-to-board sockets during cleaning
- Individual ICs and BGA chips during reballing
FAQ
What is the product name?
The product name is RF4 RF-FO33E, RF-FO33F and RF-FO33G Large Double Arm Microscope Base.
What is the brand of this product?
The brand of this product is RF4.
What is the model of this product?
The models are RF-FO33E, RF-FO33F and RF-FO33G.
What is this product used for?
This product holds a stereo or trinocular microscope steady over the repair bench for PCB and mobile phone board inspection and repair.
Which devices are compatible with this product?
This product is not device-specific. It supports stereo and trinocular microscope heads with a Φ76mm lens aperture on a Φ32mm column.
Who should use this product?
This product is suitable for mobile repair technicians, repair shops, service centers, and professional users.
What column and lens aperture size does the RF-FO33 microscope stand use?
The RF-FO33 platform uses a Φ32mm column and a Φ76mm lens aperture, with a 155mm center distance and 50mm lifting range.
Is the RF-FO33 stand stable enough for hot air and soldering work?
The base weighs roughly 9 kg and uses a duplex bearing double-arm design, which keeps the microscope steady during soldering and reballing.
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