Precision Ball Nut Housing | BK-BF Series Ball Screw Nut Bracket
The BK-BF Nut Housing (often referred to as the DSG series nut seat) is a critical mechanical interface in any high-precision ball screw drive system. Its primary function is to house the ball nut and provide a rigid, square mounting surface to attach the ball screw assembly to the machine's moving table or gantry. Precision-machined from high-strength aluminum alloy or industrial-grade steel, these housings are designed with surgical tolerances to ensure perfect concentricity with the ball screw shaft. This eliminates potential binding and reduces axial play, which is essential for maintaining the high positioning accuracy required in CNC routing and milling. The robust construction effectively handles the high acceleration and braking forces generated during rapid axis travel, ensuring that the torque from the motor is translated into smooth, stable linear movement without mechanical deflection.
- High-strength aluminum/steel construction for maximum rigidity
- Precision-bored internal diameter for a secure ball nut fit
- Standardized mounting hole patterns for easy gantry integration
- Minimizes axial deflection and mechanical vibration during travel
- Available in multiple sizes (DSG12, DSG16, DSG20, DSG25, DSG32)
- Black anodized or polished finish for superior oxidation resistance
Comparative Technical Spindle Motor Configurations Matrix
Use the structural data catalog matrix below to evaluate power outputs, maximum RPM, operating voltages, and cooling styles across standard TriQuench CNC spindle models.
| Spindle Capacity | Operating Speed | Operating Voltage | Cooling System |
|---|---|---|---|
| 12.0 kW | 18,000 RPM | 380 V | Water-Cooled |
| 0.8 kW | 24,000 RPM | 220 V | Air-Cooled (Long Shaft) |
| 3.7 kW | 40,000 RPM | 380 V | Water-Cooled ISO20 |
| 9.0 kW | 18,000 RPM | 380 V | Air-Cooled |
Technical Specifications
| Technical Parameter | Engineering Specification Value |
|---|---|
| MODEL NUMBER | BK-BF Nut Housing Series (DSG) |
| MATERIAL | High-Grade Aluminum Alloy / Cast Steel |
| COMPATIBILITY | SFU / DFU Series Ball Nuts |
| AVAILABLE SIZES | 12mm, 16mm, 20mm, 25mm, 32mm |
| MECHANICAL | mountingType: Bracket Style / Nut Seat | precisionGrade: Industrial Grade Machining | finish: Anodized or Industrial Coating |
Industrial Applications
| Usage Scenario | Target Industry |
|---|---|
| CNC Router X, Y, and Z Axis Assemblies | Machine Tool Manufacturing and CNC Fabrication |
| Linear Actuators and Precision Positioning Stages | Industrial Automation and Robotics |
| Industrial Milling and Lathe Machine Upgrades | Custom Machine Building and DIY CNC |
| 3D Printing and Large-Format Additive Manufacturing | Woodworking and Cabinetry Machinery |
| Automated Laser and Plasma Cutting Gantry Systems | Precision Engineering and Metrology |
| Laboratory Equipment requiring Precise Linear Motion | General Engineering |
Technical FAQ & Operational Guide
Does the housing come with the ball nut included?
No, the housing is a separate mounting accessory. It is designed to fit standard SFU/DFU ball nuts. When purchasing, ensure the housing size (e.g., DSG16) matches your ball screw diameter (e.g., 16mm).
What is the benefit of an aluminum housing over a custom-made steel one?
Our precision-cast aluminum housings offer an excellent strength-to-weight ratio, reducing the moving mass of your CNC gantry. They are also precision-bored to ensure the nut sits perfectly square, which is difficult to achieve with manual fabrication.
Are the mounting holes pre-threaded?
Yes, our nut housings feature pre-threaded holes for securing the ball nut and precision-drilled through-holes for mounting the housing to your machine carriage, ensuring a fast and accurate setup.
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