CYC259 Dental 1:1 Contra Angle Handpiece-Internal Water Spray

1:1 equal-speed direct drive transmission
Output rotation speed matches the electric motor, steady constant low-speed rotation, ideal for trimming, finishing, polishing and minor tooth adjustment without speed amplification or reductionNSK.
Single built-in internal water spray cooling
Central integrated inner water channel sprays coolant directly onto CA bur cutting surface, continuously dissipates heat, flushes dentin/debris, prevents tooth hypersensitivity; simple pipeline structure lowers clogging risk for easy maintenance.
Slim ergonomic stainless steel body
Streamlined slim handle design avoids collision with anterior teeth when operating molars; balanced weight reduces surgeon wrist fatigue during long polishing procedures; smooth medical stainless steel surface easy to wipe and disinfect.
NSK patented Clean Head anti-retraction system
Built-in anti-suckback sealing structure blocks saliva, blood and oral debris backflow into internal gears and ceramic bearings, extends service life and complies with global dental infection control standards.
Push-button reinforced bur chuck
Tool-free one-click loading/unloading of Φ2.35mm CA latch burs; clamping force automatically strengthens under polishing load to prevent bur slipping or wobble.
High-hardness ceramic bearing set
Ceramic bearings are 25% harder than steel bearings and half the weight, ultra-low vibration, quiet smooth rotation, outstanding wear resistance for daily high-frequency finishing work.
Full 135°C autoclave sterilizable

Model CYC259(1:1 contra angle, internal single spray)
Gear Ratio 1:1 equal-speed direct drive
Cooling System Single built-in internal water spray
Max No-load Output Speed 40,000 rpm
Head Dimension Ø9.6 × H13.4 mm compact mini head
Compatible Instrument Φ2.35 mm standard CA latch burs
Chuck Mode Push-button auto chuck
Housing Material Medical stainless steel
Sterilization Resistance Up to 135°C autoclave sterilization

Restorative filling finishing & polishing
Trim composite resin marginal overhangs, smooth amalgam filling surfaces, polish restorations with rubber cups and bristle brushes.
Prosthodontic adjustment & residual cement removal
Grind acrylic temporary crowns, metal and porcelain crown/bridge; clean excess cement around prosthesis margins.
Full-mouth professional dental prophylaxis
Mount polishing tools to remove dental pigment, plaque and superficial calculus with stable low-speed rotation.
Occlusal equilibration adjustment
Grind premature occlusal contact points to eliminate occlusal interference and masticatory discomfort.
Pediatric dental trimming & polishing
Low-vibration gentle operation and bright fiber light relieve children’s anxiety during primary tooth finishing.
Minor hard tissue smoothing work
Trim sharp enamel edges after caries excavation, auxiliary minor tooth reshaping with internal water cooling.
General clinic daily routine finishing procedures
Standard universal fiber optic 1:1 contra angle for all low-speed polishing, trimming and adjustment clinical work.