SOCO G11-SP4

The G11-SP4 suits dentists performing rotary preparation in restorative dentistry. Its air turbine drives the cutting bur, while a single water spray accompanies the work on the tooth. This combination is used in dental surgeries where preparation is performed with a chair-connected pneumatic handpiece. The turbine head and push-button chuck bring the rotating tool and its release mechanism together at the working end.

During preparation, the bearing assembly supports the rotating shaft inside the integrated head. The dynamically balanced cartridge and concentric head geometry maintain that movement as the dentist works. These mechanical details are relevant to controlled handling of a high-speed instrument. The handpiece combines drive, bur retention, and cooling into one instrument used at the chair, with a specified speed of at least 350,000 rpm.

In general dental practices and restorative departments, the supply interface is defined by the four-hole connection and 0.22–0.24 MPa inlet pressure. The pneumatic drive draws its working air through this connection. Bur changes take place through the head-mounted push button, while the single spray serves the preparation area. The instrument's noise specification is no greater than 65 dB, giving this model a defined acoustic characteristic for the department.

The internal protection features also serve the equipment workflow around these settings. Overload protection acts on working pressure, and the anti-retraction, dust-resistant head helps restrict debris ingress towards the bearing assembly. Maintenance identification is tied to the H11CA-SP collet movement reference. These details suit departments that organise handpiece upkeep around named models and their associated internal components.

The dynamically balanced cartridge and bearing-supported shaft address the movement that reaches the bur. Evenly distributed rotating mass supports steady operation within the head. For a dentist handling the instrument during preparation, the key benefit is the rotating assembly's mechanical stability.

Head geometry that supports concentricity

Computer-controlled machining forms the integrated head around the rotary mechanism. Concentricity describes alignment around a shared centre, which matters when components turn at high speed. The construction defines the bearing support and shaft location within the head geometry.

Bur release within reach

The push-button chuck places bur release at the head of the handpiece. Its actuator is part of the instrument the dentist already holds, making the exchange mechanism directly accessible. Once retained, the pneumatic turbine drives the bur through the internal rotating assembly.

Water delivered beside the cutting action

The single spray outlet directs cooling water to the working area while the turbine drives the bur. It combines cooling and rotary preparation in the same handpiece head. This arrangement supports the chairside preparation workflow with an integrated water-delivery point.

A defined pneumatic supply interface

A four-hole connection and a specified inlet pressure of 0.22–0.24 MPa define how the handpiece receives working air. The pressure is referenced to the instrument's back. These characteristics provide a concrete interface for its use with a dental delivery system.

Protection around the bearing assembly

The anti-retraction, dust-resistant structure prevents debris from entering the internal bearings. Its mechanical purpose is to restrict this inward passage and protect the rotating components. This complements the bearing support already built into the turbine head.

Pressure protection within the drive

The pneumatic mechanism incorporates overload protection to address excessive working pressure. The protective function sits alongside the air-driven cartridge inside the handpiece. It reflects the design's attention to the operating conditions experienced by the rotating assembly.

A named component for maintenance identification

The H11CA-SP reference identifies the associated collet movement for this configuration. A specific component code supports consistent identification of the internal assembly during handpiece maintenance. The G11-SP4 instrument code and H11CA-SP movement code distinguish the complete product from its associated part.

Pneumatic turbine drive

Compressed air powers the turbine. The rotating assembly transfers this motion to the bur through the shaft and chuck, providing the cutting movement used in dental preparation.

Rotation speed of at least 350,000 rpm

The specified speed places the G11-SP4 in the high-speed handpiece category. It is rated at least 350,000 revolutions per minute, with the turbine and bearing assembly providing the rotating mechanism.

Single water spray

One water spray outlet serves the working area. It delivers cooling water alongside the bur, integrating the water path with the handpiece's rotary preparation function at the head.

Push-button chuck

Bur retention and release are controlled through a push-button mechanism. The chuck holds the bur in the rotating assembly, and the head-mounted button provides direct access to the release function.

Standard push-button configuration

The G11-SP4 uses a standard push-button arrangement within this series. The head contains the bur-holding mechanism, turbine and bearing support, with the spray outlet positioned to serve the working end.

Four-hole inlet connection

The rear connection uses the four-hole configuration identified for this model. It forms the interface between the handpiece and the dental unit supply, bringing the pneumatic drive into the chairside equipment setup.

Working air pressure of 0.22–0.24 MPa

The pressure specification applies at the back of the handpiece. Expressed in megapascals, the 0.22–0.24 MPa range defines the working inlet pressure for its pneumatic operating mechanism.

Noise level no greater than 65 dB

SOCO assigns this configuration a noise specification of at most 65 dB. This value describes the handpiece's acoustic characteristic, along with the dynamic balancing used in its rotating assembly.

Integrated machined head

Computer numerical control, or CNC, machining forms the integrated head. This process supports consistent concentricity around the shaft, aligning the housing and rotating components.

Dynamically balanced rotating assembly

The cartridge undergoes dynamic balancing during manufacture. Balancing addresses rotating mass around the shaft axis, supporting even bearing loading and stable movement as the turbine drives the bur.

Bearing-supported shaft

The bearing assembly supports the shaft inside the handpiece head. It works with the dynamically balanced cartridge to maintain the rotary movement central to the instrument's cutting function.

Pneumatic overload protection

Protection against excessive working pressure is built into the operating arrangement. This feature acts on the pneumatic mechanism and forms part of the handpiece's internal protection design.

Anti-retraction and dust-resistant structure

The head is designed to resist inward suction and restrict debris entry towards the bearings. The protective structure surrounds the working mechanism, which the cartridge and shaft assembly maintain in rotation.

H11CA-SP collet movement reference

SOCO identifies the associated collet movement with the code H11CA-SP. This reference belongs to the internal component associated with the G11-SP4 handpiece configuration and provides a specific maintenance identifier.

The SOCO G11-SP4 suits restorative dental practices that need an air-driven handpiece with a defined working pressure, single-spray cooling, and direct push-button access to the bur holder. Its strongest mechanical emphasis is the rotating assembly: bearing support, dynamic balancing and an integrated machined head work together around the shaft. This makes the model relevant where stable turbine operation and clear component identification matter in day-to-day equipment use. Upkeep identification centres on the associated H11CA-SP collet movement, while the complete instrument remains identified as G11-SP4. The handpiece operates through a four-hole connection at 0.22–0.24 MPa and carries a rotation-speed rating of at least 350,000 rpm.