W&H WS-92 Surgical Contra-Angle Handpiece (1:2.7 Increasing Speed)

The WS-92 is a high-speed 1:2.7 speed-increasing surgical contra-angle handpiece designed for oral surgery procedures requiring efficient cutting, controlled access, and effective cooling. With a speed-increasing gear ratio and triple spray cooling, the WS-92 is well suited for procedures such as osteotomy, sequestrotomy, and tooth sectioning where cutting efficiency and visibility are critical.

Manufactured by W&H, the WS-92 combines ergonomic balance, a dismantlable design for thorough cleaning, and multiple illumination options to accommodate different motor platforms and clinical preferences.

Clinical indications

• Osteotomy

• Sequestrotomy

• Germectomy

• Hemisection

• Extraction of wisdom teeth

Key features

• 1:2.7 speed-increasing gear ratio - multiply control box speed displayed by 2.7x for bur speed 

• Contra-angle surgical handpiece design

• Push-button chuck system

• Accepts surgical burs and cutters with FG shank Ø 1.6 mm

• Triple spray cooling for effective heat control

• Dismantlable construction for thorough cleaning and maintenance

• Ergonomic design supporting fatigue-free working

• High-quality stainless steel construction with scratch-resistant coating

• Thermo washer-disinfectable and sterilizable

Handpiece Options: 

WS-92 (Non-LED)

• 1:2.7, dismantlable

• No integrated illumination

• FG shank Ø 1.6 mm surgical burs and cutters

• Triple spray cooling

• Maximum drive speed: 50,000 rpm

• Coupling system: ISO 3964 (DIN 13940)

WS-92 LG (mini LED+, self-generating)

• 1:2.7, dismantlable

• Integrated mini LED+ with self-contained generator

• Daylight-quality illumination independent of the motor

• FG shank Ø 1.6 mm surgical burs and cutters

• Triple spray cooling

• Maximum drive speed: 40,000 rpm

• Coupling system: ISO 3964 (DIN 13940)
  

WS-92 L (motor-powered LED)

• 1:2.7, dismantlable

• mini LED+ powered via motor connection

• Developed for use with W&H EM-19 LC / EM-19 electric motors

• Optimized for the Implantmed Plus SI-1015 system

• FG shank Ø 1.6 mm surgical burs and cutters

• Triple spray cooling

• Maximum drive speed: 50,000 rpm

• Coupling system: W&H EM-19 LC / EM-19
  

mini LED+ illumination options

• LG variant: self-generating mini LED+ with an integrated generator, providing natural, daylight-quality illumination without reliance on the motor.

• L variant: mini LED+ powered directly through the EM-19 LC motor connection, delivering optimal illumination when paired with the Implantmed Plus SI-1015 system.

Both LED options enhance visualization of the surgical site and support precise, controlled surgical workflows.

Technical summary

• Gear ratio: 1:2.7

• Design: surgical contra-angle

• Bur system: FG shank Ø 1.6 mm

• Cooling: triple spray

• Dismantlable: yes

• Coupling system: ISO 3964 (DIN 13940) or W&H EM-19 LC / EM-19 (variant-dependent)

• Sterilization: thermo washer-disinfectable and sterilizable