CNC Turning

The Parts That
Connect Your System

Couplings interface your motor to the screw. Bearing housings locate your shaft. Adapters translate between standards. These turned components are small in size but critical in function — and we machine them to the same precision as every lead screw we make.

Tolerances

General turning ±0.05mm. Bearing fits and critical bores to H6/h6. Surface finish Ra 1.6 – 3.2 standard; Ra 0.8 on request.

Materials

Steel, stainless (304/316), aluminium, brass, bronze, engineering plastics.

Volume

Small batches to production runs. Able to accommodate low minimum order quantities per run.

Lead Time

Rush orders considered. Singapore production with limited import delays.

Every linear motion system has interfaces — points where one component transitions into the next. The coupling between motor and screw. The bearing housing that locates the shaft. The adapter that bridges a metric screw to an imperial nut. The machined end that indexes against a stop.

These are precision interfaces. A few hundredths of a millimetre of runout in a coupling translates directly to premature wear on your lead screw nut. A housing that’s bored slightly oversize compromises your bearing preload. The components that “connect” your system are not secondary — they define how the whole thing performs.

At TNL Engineering Works, we turn these components to the same standard as our lead screws. And because we’re making both, we can dimension the coupling and the screw end to work together from the start by minimizing tolerance stack-up — rather than hoping two separately-sourced parts happen to agree.

PARTS THAT CONNECT YOUR SYSTEM

We machine turned components where your linear motion systems meet for a seamless operational process throughout.

Couplings

Turned coupling hubs bored and keyed to your shaft spec. The hubs are matched to jaw or beam coupling elements with split-clamp designs available for zero-backlash connection between motor and lead screw.

Bearing Housings

Turned bearing housings and flanged holders for fixed and floating screw ends. Bored to your bearing OD, faced and chamfered for a clean seat. Matched to your bearing catalogue number on request.

Non-Metal Machining

We machine engineering plastics such as UHMWPE, Delrin, and nylon to the same tight tolerances as our metal work — threaded profiles, bored housings, and custom fittings for applications where corrosion resistance, low friction, or electrical isolation is a priority.

Turned Journal Ends

Custom-turned screw end geometry in stainless steel: reduced-diameter journal ends, drilled centres, cross-bored holes, keyway-ready shafts. Specify your screw end geometry and we machine it to match your bearing or coupling bore.

Custom Nut Bodies and Adapters

Knurled cap nuts and hex-body nut adapters turned to your thread and body spec. Where a standard nut won’t mount directly to your carriage, we machine the part that bridges the gap.

Shafts, Pins & Pillars

Custom-turned tension rods, guide shafts, and support pillars for linear motion frames. Multiple diameter steps, threaded ends, and hex flange features turned to your drawing.

Bearing Lock Nuts and Collars

Precision-turned lock nuts and thrust collars that axially retain bearings on your lead screw shaft. Threaded to your shaft specification with spanner flat or set-screw engagement — keeping the bearing firmly seated under both static preload and dynamic thrust loads throughout travel.

Explore Related Services

Lead Screws Machining

CNC Milling

Lead Screw Nuts

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