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Ball Screw Support Units – Square & Circular Flange
PRODUCT PARAMETERS
Premium BK/BF/EK/EF Ball Screw Support Units - Square & Circular Flange. Rigid aluminum alloy fixed and floating end supports for high-precision linear motion. Ideal for CNC machines, 3D printers, laser cutters and automation systems. Custom sizes available.
Description
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Description
Ball Screw Support Units (also known as Ball Screw Support Brackets, BK/BF/EK/EF Series) are precision-machined components designed to securely mount and stabilize ball screws in linear motion systems. Available in both square flange and circular (round) flange designs, these support units provide exceptional rigidity, accurate alignment, and smooth high-speed operation.
Our Ball Screw Support Units are manufactured from high-strength aluminum alloy with black anodized finish, featuring integrated deep groove ball bearings, locking nuts, and retaining rings. They are the ideal end supports for ball screws in CNC machines, 3D printers, laser cutters, automation equipment, and robotics.
The product image above displays a complete range of square and circular flange types with matching accessories, showcasing professional-grade quality and variety.

Key Benefits of Ball Screw Support Units
- High Rigidity and Precision Heavy-duty construction with precisely machined bearing housings ensures minimal deflection and excellent shaft alignment, delivering superior positioning accuracy even at high speeds.
- Square vs Circular Flange Options
- Square Flange: Offers larger mounting surface and higher stability for heavy-load applications.
- Circular Flange: Compact design, easier alignment, and space-saving installation.
- Easy Assembly & Maintenance Pre-assembled with high-precision bearings, locking nuts, and circlips. Split or fixed designs allow quick ball screw installation and adjustment.
- Excellent Durability Black anodized aluminum provides superior corrosion resistance and a sleek professional appearance. Low friction bearings support high rotational speeds with minimal noise and heat.
- Cost-Effective Performance Factory-direct pricing combined with long service life and low maintenance makes these support units an outstanding value for both OEM and custom machinery builders.
Square vs Circular Flange Comparison
| Feature | Square Flange Support | Circular Flange Support | Recommended Use |
|---|---|---|---|
| Mounting Surface | Larger & Stronger | Compact | Heavy load vs Space-limited |
| Rigidity | Excellent | Very Good | High-precision CNC vs Compact |
| Installation Flexibility | Good | Excellent | Standard vs Tight spaces |
| Load Capacity | Higher | Balanced | Heavy-duty vs Medium |
| Design Style | Block-style | Round compact | Industrial vs Modern equipment |
| Common Series | BK, EK, FK | BF, EF, FF | Fixed & Floating pairs |
Technical Specifications (Standard Range)
- Series Types: BK (Fixed), BF (Floating), EK, EF, AK, FK, FF
- Shaft / Ball Screw Diameter: 8mm, 10mm, 12mm, 15mm, 16mm, 20mm, 25mm, 32mm, 40mm
- Flange Types: Square Flange & Circular (Round) Flange
- Material: High-strength Aluminum Alloy 6061 with Black Anodizing
- Bearing: High-precision deep groove ball bearings (C3 clearance)
- Surface Treatment: Matte black anodized for durability and aesthetics
- Mounting: Pre-drilled holes with standard metric threads
- Accessories Included: Locking nut, retaining rings (circlips), spacers
- Speed Rating: Up to 5000 RPM (model dependent)
- Custom Options: Special lengths, reinforced designs, stainless steel versions, and OEM branding
All units are fully compatible with major brands (THK, HIWIN, TBI, etc.) and available as fixed-floating pairs.
Wide Range of Applications
- CNC Routers & Milling Machines – Precise ball screw end support
- 3D Printers & Laser Engravers – Smooth Z-axis and linear movement
- Automation Equipment & Robotics – High-speed linear actuators
- Packaging & Printing Machinery – Reliable continuous operation
- Medical Devices & Laboratory Instruments – Clean and quiet performance
- Semiconductor & Inspection Systems – Ultra-precise positioning
- DIY Maker Projects – Professional upgrade for custom builds
Why Choose Our Ball Screw Support Units?
We specialize in precision linear motion components with rigorous quality control — from material sourcing to final dynamic testing. Every Ball Screw Support Unit undergoes dimensional inspection, bearing runout testing, and load endurance validation.
Key advantages include:
- Competitive wholesale pricing with excellent margins
- Fast prototyping and bulk production capability
- Complete technical support and 3D models
- OEM/ODM services with custom logos and packaging
- Reliable global shipping and after-sales support
Take Your Linear System to the Next Level
Upgrade your machinery with our high-performance Ball Screw Support Units (Square & Circular). Contact our team today for samples, detailed catalogs, technical drawings, or a custom quotation. We deliver precision, reliability, and value for all your ball screw applications.
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FAQs
What types of products can we offer?
Make amazing 60 degree bevel cuts with our 8-1/4 in. SKILSAW Worm Drive model SPT78W-01. This saw is powered by our largest 15 amp Dual-Field high torque motor so you will make the last cut as precisely as you did the first cut. Exclusive 60 degree bevel. High torque Dual-Field motor. Legendary SKILSAW durability. Includes: SPT78W 8-1/4 In. Worm Drive SKILSAW, 24 Tooth Carbide blade and multi-functional blade wrench.

What logistics do we ship through?
Can it be customized as per our requirements?

Make amazing 60-degree bevel cuts with our 8-1/4 in. SKIL Worm Drive Skilsaw model SPT78W-01. This Skilsaw is powered by our largest 15 amp Dual-Field™ high torque motor so you will make the last cut as precisely as you did the first cut. Exclusive 60-degree bevel. High torque Dual-Field™motor. Legendary SKIL durability.
What is our ordering process?
Shenguan is a direct seller of CATL, LISHEN, EVE, GOTION, Narada, TAFEL, CALB, REPT and other batteries. We have fresh stock, ready for shipment. Support ODM&OEM, please contact the store customer service to provide customized requirements.
What services are included in the after-sales service?
- This saw is powered by our largest 15 amp Dual-Field
- High torque motor so you will make the last cut as precisely as you did the first cut.
- Exclusive 60 degree bevel. High torque Dual-Field motor. Legendary SKILSAW durability.
- Includes: SPT78W 8-1/4 In. Worm Drive SKILSAW, 24 Tooth Carbide blade and multi-functional blade wrench.
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