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Duplex Spring Adapter - Foredom HP775

Duplex Spring Adapter - Foredom HP775 - Main image
$64.19 $94.39 In stock

Foredom HP775 Duplex Spring Adapter

Product Description

The Foredom HP775 Duplex Spring Adapter is a precision-engineered accessory that adds a remarkable degree of extra flexibility to any Foredom flexible shaft system. Designed for intermittent, light-duty work, it serves as a seamless extension between the back end of a compatible handpiece and the flexible shafting, allowing craftspeople to maneuver into tight angles and confined workspaces that would otherwise be difficult or impossible to reach.

The spring drive is constructed from special steel, double-wound in a tubular configuration, and is enclosed within a protective flexible spring cover for durability and long service life. The adapter connects at both ends using key-tip alignment — simply align each key tip within the slot of each shaft connector for a secure, reliable fit. When the job calls for less delicate work, the adapter removes quickly and easily, making it a versatile addition to any flex shaft setup.

This adapter is recommended for experienced users of flexible shaft tools and for those whose work demands added flexibility and reach. It is ideal for fine engraving, detailed carving, jewelry work, dental lab applications, and other precision tasks where a straight handpiece-to-shaft connection limits access.


What's in the Box

  • (1) HP775 Duplex Spring Adapter

Please Note: This product includes the Duplex Spring Adapter only. The flexible shaft, motor, and handpiece are shown for demonstration purposes and must be purchased separately.


Key Specifications

Attribute

Detail

Part Number

HP775

Product Type

Duplex Spring Adapter

Drive Construction

Special steel, double-wound, tubular

Spring Cover

Protective flexible spring cover

Connection Type

Key-tip to key-tip (both ends)

Recommended Use

Intermittent, light-duty precision work

Maximum Bend Angle

45° (do not exceed)

Warranty

Duplex springs are not covered by warranty


Compatible Replacement Parts

The duplex spring components are subject to normal wear and can be replaced individually. Foredom recommends purchasing the HP7501 Sub-Assembly to avoid damaging the duplex spring during replacement.

Part No.

Description

HP7503

Handpiece Tip

HP7501

Duplex Key Tip Inner Spring Sub-Assembly

HP7502

Duplex Key Tip (component of HP7501)

HP76

Duplex Inner Spring (component of HP7501)

HP75

Duplex Axle (component of HP7501)

HP73

Duplex Cover

HP47

Washer

HP10531

External Retaining Ring

HP46

Slotted Shaft Connector

HP42

Q.D. Connector

HP48

Catch Ball

HP43

Catch Spring


Recommended Lubricants

The duplex spring component requires periodic lubrication for optimal performance and longevity. Foredom recommends the following lubricants

Part No.

Description

MS10005

Foredom Motor & Handpiece Oil (hypodermic dispenser)

MS10006

Foredom Flexible Shaft Grease (1-oz. tube)


Important Usage Guidelines

To maximize the lifespan of your HP775 Duplex Spring Adapter and ensure safe operation, please observe the following:

Do move the workpiece slightly further from the motor when using the Duplex Spring Adapter, to prevent sharp bends in the duplex spring.

Do not subject the connection to bends exceeding 45 degrees, as this will cause frequent breakage or kinking of the springs.

Do not use the HP775 with large buffs greater than 1 inch in diameter, aggressive burs, or chisel handpieces.

Do not exert excessive pressure on the work — let the speed of the tool do the work.

Note: Duplex Springs are subject to breakage and are not covered by warranty. This product is intended for experienced flexible shaft users.

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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (4.4 / 5 · 5 reviews)

Scarlett ★★★★★

I was worried the extra joint might create vibrations, but the machining is so precise it spins smooth as butter. Now I can get into those awkward corners behind the bench without fighting the cable.

Amelia ★★★★★

So glad I grabbed this. That duplex spring design genuinely adds the flexibility I was hoping for, and it clicks into place with satisfying precision.

Violet O. ★★★★★

The duplex spring makes it so much easier to get into tight spots without the cable binding up. Installed it on my flex shaft in under a minute and immediately noticed the smoother operation. Exactly what I needed for detailed work.