Slow Handpiece 4 Hole – NSK

A slow-speed handpiece by NSK (Nakanishi) is a dental instrument designed to operate at lower rotational speeds compared with high-speed turbines. It’s used for procedures requiring high torque and controlled movement rather than rapid cutting, such as:

• Prophylaxis (polishing)

• Adjusting prosthetics

• Endodontic file use

• Slow drilling and finishing work

NSK is a well-known manufacturer of high-quality dental handpieces and micromotors, known for durability and smooth performance.

🔧 Key Characteristics

Speed & Torque

• Typical low-speed range: around 22,000-30,000 rpm depending on model and configuration.

Handpiece Types

• Contra-angle handpiece: Angled head for easier access to posterior areas.

• Straight handpiece: Straight design, often used with prophy angles.

Drive & Connection

• Usually air-driven via a low-speed air motor (E-type connection with 2-hole or 4-hole hoses).

• Can be push-button or latch type for securing burs.

Autoclavability

• Handpiece and contra angle are typically autoclavable at up to ~135°C, which makes them suitable for repeated sterilization.

Bur Compatibility

• Accepts 2.35 mm shank burs, including latch-type burs and contra-angle attachments.

🛠️ Common Specifications