SHF8 Bracket – 8mm Linear Rail, Shaft, Rod Support – CNC & 3D Printer

The SHF8 Bracket is a flat-base aluminium alloy shaft support designed to clamp and hold 8mm smooth rods, linear shafts, and guide rails at fixed points along a CNC machine or 3D printer frame. Its split-clamp bore closes with a single M4 bolt, securing the rod without any machining — just bolt the flat base to your frame and tighten. Built to C7 precision and anodised for corrosion resistance, this shf8 bracket provides the rigid end and intermediate support that keeps 8mm rods straight under load. Whether you are building a RepRap Prusa i3, a CNC router gantry, or a custom linear axis, SHF8 brackets eliminate rod flex and shaft migration at the termination points — resulting in truer linear motion and longer bearing life. Key Features 8mm bore — fits standard 8mm smooth rods, linear shafts, and chrome-plated guide rails Flat-base (SHF) style — mounts flush to frame panels, extrusions, and bed plates Split-clamp design — single M4 bolt clamps the bore; no machining or press-fitting needed 2-hole mounting base — 20mm bolt-hole spacing, M5 mounting bolts (not included) Aluminium alloy construction — anodised for corrosion resistance and long service life C7 precision rating — consistent bore geometry for repeatable shaft alignment Available in packs of 1, 2, 4, or 8 — quantity pricing for full-axis builds Use Cases End and mid-span support for 8mm smooth rods on RepRap, Prusa i3, and other cartesian 3D printers Rod termination points on CNC router X, Y, and Z axes Custom linear stages for laser cutters, plotters, and pick-and-place machines Replacing worn or loose shaft supports on an existing machine Works Well With LM8UU 8mm Linear Ball Bearing — the standard bearing that rides the rod the SHF8 supports SCS8UU 8mm Linear Slide Unit — carriage block for CNC and router applications 8mm Chrome Plated Linear Shaft Rod — the smooth rod this bracket is built to support SHF8–SHF30 Full Range — larger bore sizes for 10mm, 12mm, and 16mm rod builds Project Ideas & Tutorials Build A RepRap — RepRap Wiki — covers 8mm smooth rod assembly with shaft supports in a full printer build CNC Router — RepRap Wiki — shows linear shaft support usage in a CNC router context Package Contents 1, 2, 4, or 8 × SHF8 Bracket (as selected)