Seikoh Giken SFP-520 Fiber Optic Connector Polishing Machine

Seikoh Giken SFP-520 Fiber Optic Connector Polishing Machine

The Seikoh Giken SFP-520 is a production-grade fiber optic connector polishing machine designed for precision end-face preparation in telecommunications, optical component manufacturing, cable assembly, laboratory, and repair environments. Its compact design supports efficient batch processing while providing the controlled pressure and repeatable polishing motion required for professional fiber termination workflows.

The SFP-520 uses Seikoh Giken’s rotation-and-revolution polishing method. During operation, the polishing plate rotates while following a revolving path, helping distribute polishing action across the connector end faces and polishing film. When the appropriate holder, pads, films, and process are used, the machine supports physical-contact, high-performance physical-contact, ultra-physical-contact, and angled physical-contact connector finishes.

The machine can polish up to 12 compatible connectors simultaneously with the appropriate polishing holder. Interchangeable fixtures support major fiber optic connector and ferrule formats, including FC, SC, ST, LC, MU, D4, and E-2000. The exact processing capacity depends on the connector type and installed holder.

Adjustable polishing pressure allows the process to be configured for different connector constructions and polishing stages. The SFP-520 is suitable for epoxy removal, coarse polishing, intermediate polishing, final polishing, and cleaning when used with the appropriate Seikoh Giken consumables and approved process.

Features and Benefits of the Seikoh Giken SFP-520

The Seikoh Giken SFP-520 provides practical value for professional users who require efficient batch processing and repeatable fiber optic connector end-face preparation.

• Production polishing capability: Designed for volume fiber optic connector manufacturing, assembly, and rework.
• Up to 12 connectors per cycle: Processes multiple compatible connectors simultaneously with the appropriate polishing holder.
• Rotation-and-revolution method: Produces controlled polishing motion for consistent connector end-face preparation.
• Adjustable polishing pressure: Allows pressure to be configured according to the connector, ferrule, pad, film, and polishing step.
• Broad connector compatibility: Supports compatible FC, SC, ST, LC, MU, D4, E-2000, and ferrule formats with the correct holder.
• Multiple polish geometries: Supports compatible PC, HPC, UPC, and angled APC processes.
• Compact production design: Provides batch-polishing capability in a space-conscious benchtop machine.
• Accessible polishing platform: The lifting arm arrangement provides access for changing films and servicing the polishing area.
• Repeatable processing: Supports standardized multi-step polishing procedures for manufacturing and quality-control environments.
• Professional fiber applications: Suitable for telecommunications, data communications, optical components, patch cords, pigtails, laboratory assemblies, and production workflows.

Rotation-and-Revolution Polishing

The SFP-520 combines rotational and orbital motion during the polishing cycle. This motion helps distribute contact between the connector end faces and the polishing film rather than concentrating wear in one fixed location.

The polishing mechanism operates at a documented revolution speed of 70 rpm and a rotation speed of 1 rpm. Correct results depend on the installed plate, fixture, rubber or glass pad, polishing film, lubricant, pressure setting, process duration, and connector preparation.

The polishing plate and holder should remain parallel during operation. Contamination, damaged pads, worn holders, incorrect loading, or uneven connector protrusion can affect end-face geometry and polishing consistency.

Multi-Connector Production Capacity

The SFP-520 can polish up to 12 connectors simultaneously when equipped with an appropriate holder. Batch processing can improve throughput and help standardize polishing conditions across multiple connector assemblies.

Actual capacity depends on the connector family and holder configuration. Small-form-factor connectors, 2.5 mm ferrules, specialty ferrules, and angled connectors require fixtures designed for their geometry and orientation.

Every connector should be prepared consistently before loading. Ferrule protrusion, adhesive curing, epoxy-bead size, cable routing, and fixture clamping should be checked before the polishing cycle begins.

Connector and Ferrule Compatibility

The SFP-520 platform supports major fiber optic connector types using interchangeable polishing holders. Compatible connector families include:

• FC fiber optic connectors
• SC fiber optic connectors
• ST fiber optic connectors
• LC small-form-factor connectors
• MU small-form-factor connectors
• D4 connectors
• E-2000 connectors
• Compatible 2.5 mm ferrules
• Compatible PC, UPC, and angled APC ferrule assemblies

The required polishing holder should be confirmed for the exact connector body, ferrule diameter, polish angle, cable construction, and batch capacity. A connector should not be installed in a fixture solely because the ferrule appears to fit.

PC, UPC, and APC Polishing

The SFP-520 supports compatible polishing processes for physical-contact and angled physical-contact connector geometries. A typical UPC polishing sequence can be completed in approximately four minutes, while an APC process can require approximately five minutes. Actual processing time depends on connector preparation, adhesive condition, film sequence, pressure, pad, and acceptance requirements.

PC and UPC connectors use a non-angled ferrule end face. APC connectors use an angled end face, typically requiring a dedicated holder that maintains the correct ferrule orientation throughout polishing.

APC and PC fixtures, pads, and procedures should not be interchanged without verifying compatibility. Completed connectors should be inspected and tested before being released for use.

Adjustable Polishing Pressure

The SFP-520 provides adjustable polishing pressure for configuring the mechanical load applied during the polishing process. Different polishing steps can require different pressure settings according to the connector, ferrule material, number of loaded positions, pad hardness, polishing film, and desired geometry.

Pressure should be established using the applicable process documentation. Excessive pressure can cause fiber undercut, ferrule deformation, scratches, film damage, or poor geometry. Insufficient pressure can lead to incomplete epoxy removal, uneven polishing, or extended processing time.

The pressure mechanism should move consistently and should be checked periodically for contamination, wear, damaged springs, or unstable operation.

Typical Applications

The Seikoh Giken SFP-520 is suitable for professional applications such as:

• Fiber optic connector manufacturing
• Patch cord and pigtail production
• Connector retermination and repair
• PC, UPC, and APC end-face preparation
• Telecommunications cable assembly
• Data center fiber component production
• Optical component manufacturing
• Laboratory fiber termination
• Production and quality-control workflows
• Fiber optic training programs
• Connector process development
• Replacement production-polisher requirements

Product Overview

Brand	Seikoh Giken
Model	SFP-520
Product Category	Fiber Optic Connector Polishing Machine
Polishing Method	Rotation and revolution
Maximum Batch Capacity	Up to 12 connectors with the appropriate holder
Polish Types	Compatible PC, HPC, UPC, and APC processes
Pressure Control	Adjustable
Primary Application	Production polishing of fiber optic connector and ferrule end faces

 

Specifications

Specification	Details
Manufacturer	Seikoh Giken
Model Number	SFP-520
Machine Type	Production fiber optic connector polisher
Maximum Connector Capacity	Up to 12 connectors, depending on the holder
Applicable Connectors	Compatible FC, SC, ST, LC, MU, D4, E-2000, and ferrule assemblies
Supported Polishing	PC, HPC, UPC, and angled APC processes with suitable tooling
Polishing Motion	Rotation and revolution
Revolution Speed	70 rpm
Rotation Speed	1 rpm
Typical UPC Polishing Time	Approximately 4 minutes
Typical APC Polishing Time	Approximately 5 minutes
Polishing Plate Material	Heat-treated stainless steel
Pressure Control	Adjustable
Dimensions	184 mm wide x 275 mm deep x 305 mm high
Power Configurations	100 to 120 VAC, 50/60 Hz, or 220 to 240 VAC, depending on machine configuration

 

Compatible Polishing Components

Component	Application
Connector-Specific Polishing Holder	Secures compatible connectors or ferrules during batch polishing
Rubber Polishing Pad	Provides controlled compliance for applicable polishing steps
Glass Polishing Pad	Provides a rigid polishing surface for applicable process stages
Epoxy Removal Film	Removes cured adhesive from the ferrule end face
Rough Polishing Film	Performs initial material removal and geometry formation
Intermediate Polishing Film	Refines the ferrule and fiber surface before final polishing
Final Polishing Film	Produces the final supported end-face finish
Cleaning Film	Supports removal of polishing residue during the process
Polishing Oil	Used where required by the applicable polishing procedure

 

Installation and Operation

The SFP-520 should be installed on a stable, level workbench with suitable clearance for its lifting arm, cable holder, polishing fixture, controls, and power connection. The operating voltage should be confirmed from the machine label before it is connected to AC power.

The correct polishing plate, pad, film, holder, connector-loading pattern, pressure setting, and timer setting should be selected before operation. Connector ferrules should be inspected for consistent protrusion and properly cured adhesive before they are loaded into the holder.

The polishing surface and fixture should remain clean. Fiber debris, abrasive residue, cured epoxy, damaged film, or contamination between the pad and plate can produce scratches, poor geometry, uneven polishing, or connector damage.

After polishing, each connector should be cleaned and inspected with a suitable fiber optic inspection system. Finished assemblies may require end-face geometry measurement, insertion-loss testing, and return-loss testing according to the applicable acceptance procedure.

Comprehensive Functional and Performance Testing

The Seikoh Giken SFP-520 receives comprehensive functional and performance testing before shipment. Evaluation may include AC power operation, control-panel response, timer operation, turntable movement, rotation-and-revolution motion, pressure adjustment, lifting-arm operation, cable-holder condition, and general mechanical stability.

When suitable tooling and consumables are available, testing may include a representative polishing cycle using compatible connector or ferrule samples. Evaluation can include film tracking, holder seating, pressure consistency, process timing, connector-end-face appearance, and machine vibration.

The enclosure, polishing plate interface, drive mechanism, pressure assembly, arm, fixture mounts, cable holder, controls, switches, AC cable, fuse holder, labels, and ventilation openings may be inspected for contamination, corrosion, damaged hardware, unauthorized modification, or excessive wear.

The exact testing scope depends on the included holders, plates, pads, films, power configuration, available connector samples, inspection equipment, interferometer, and optical test instruments.

Why Buy from AssetRelay?

AssetRelay supplies professional equipment and product solutions for fiber optic connector manufacturing, polishing, fusion splicing, cleaning, inspection, telecommunications, optical testing, photonics, laboratory, production, and technical service applications. The Seikoh Giken SFP-520 supports cable manufacturers, connector assembly facilities, optical component producers, laboratories, universities, service organizations, and fiber optic training programs.

Buyers should review the machine voltage, connector capacity, polishing-holder compatibility, plate and pad requirements, adjustable-pressure mechanism, control functions, functional test results, and included accessories before purchase.

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