Product Title: BK12 BF12 Ball Screw End Support Bearing Units Set for 16mm Ball Screws
Description:
The BK12/BF12 Ball Screw End Support Set is designed to provide rigid axial and radial support for 16mm diameter ball screws, such as SFU1604, SFU1605, and SFU1610 series. The BK12 fixed-end unit houses pre-loaded bearings to absorb axial thrust loads, secured tightly with a locknut containing a internal brass cushion pad. The BF12 floating-end unit features a smooth bearing bore to accommodate axial thermal expansion and alignment tolerance, retained with an external circlip. Constructed with black-oxide coated steel housings, this pair ensures precise axis rotation and low backlash in CNC routers, 3D printers, and linear automation stages.
Key Features:
- Complete Fixed & Floating Pair: Includes one BK12 fixed-side block and one BF12 floating-side block for comprehensive end mounting.
- BK12 Fixed End (12mm ID): Features a 12mm inner diameter bearing seat designed for fixed end shaft journals, paired with an M12 locknut with a protective brass cushion pad.
- BF12 Floating End (10mm ID): Features a 10mm inner diameter bearing seat designed for floating end shaft journals, secured with an external snap ring.
- Standard 16mm Ball Screw Compatibility: Matches standard machined ends on 16mm series ball screws (SFU1604, SFU1605, SFU1610).
- High-Rigidity Black Oxide Housing: Heavy-duty steel block housing with a corrosion-resistant black oxide surface finish.
Technical Specifications:
| Parameter | Specification | Source / Notes |
| Product Type | Ball Screw Support Units (Fixed + Floating Pair) | Linear motion shaft support set |
| Fixed Unit Model | BK12 (Fixed End) | Absorbs axial thrust & radial load |
| BK12 Bearing Inner Diameter | 12 mm | Fits 12mm machined fixed journal |
| BK12 Locking Hardware | M12 Locknut with Brass Pad | Prevents thread damage and loosening |
| Floating Unit Model | BF12 (Supported End) | Allows axial float / thermal movement |
| BF12 Bearing Inner Diameter | 10 mm | Fits 10mm machined supported journal |
| BF12 Retaining Hardware | External Circlip / Snap Ring | Retains radial bearing in position |
| Compatible Screw Series | 16mm Diameter (SFU1604, SFU1605, SFU1610) | Standard end-machined ball screws |
| Housing Material | Carbon Steel | High-rigidity construction |
| Surface Finish | Black Oxide Coating | Anti-rust protection |
Package Contents:
- 1x BK12 Fixed End Bearing Block
- 1x Precision M12 Locknut (with brass spacer pad)
- 1x BF12 Floating End Bearing Block
- 1x Retaining Circlip / Snap Ring
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