CNC Brass Machined Parts Bearing Support Base Non Standard OEM For Automation Machines

Product Summary

This custom L-type non-standard brass bearing housing is fully manufactured on 5-axis simultaneous turn-mill composite machines, integrating the thick square central bearing body, vertical L-shaped mounting back plate, extended horizontal bottom flange, full precision inner bearing bore, and all distributed countersink mounting holes, done in one single uninterrupted clamping cycle. Made from premium free-cutting brass alloy, the part achieves tolerance down to ±0.008 mm, inner bore finish Ra ≤ 0.8 μm, no coaxiality drift between mounting flange datum and central bearing axis. The monolithic brass construction brings natural self-lubrication, excellent corrosion resistance and ultra high thermal conductivity, widely used for linear bearing supports, 3D printer motion modules, CNC machine tool carriage mounts, and automation positioning assemblies.

Product Overview

These custom L-type integrated flange brass bearing housings are precision machined with 5-axis one-setup composite CNC technology, engineered to deliver micron level accuracy for the central bearing inner bore, dual perpendicular mounting datum planes, and every distributed installation feature. Our optimized single-clamp workflow completes the full irregular L geometry without any part re-fixturing, completely eliminates positional offset between different perpendicular faces that multiple separated machining steps will introduce.

All our monolithic brass bearing housings are machined from solid brass billet, no welded or assembled joints, which guarantees no structural looseness or misalignment after long term dynamic operation. Brass material brings built-in anti-corrosion performance for humid workshops, natural self-lubrication that extends bearing life, and fast heat dissipation to avoid thermal jam. We support full material selection: free cutting brass, lead-free brass, pure copper, 304 / 316 stainless steel, 6061 / 7075 aluminum, and titanium alloy, fully matching your different application requirements.

Machining Challenge & Optimized Solution

Official Product Full Specification Table

Core Machining Feature Highlights

1. 5-Axis Single-Clamp All-in-One Machining: The full irregular L profile, back vertical flange, bottom horizontal flange, central bearing body and all inner bore features are done in one continuous fixture loop, no master datum shift, no profile twist.

2. Dual Perpendicular Datum Planes Precision Grinding: Both back vertical flange and bottom horizontal mounting face go through synchronous precision surface grinding, flatness ≤ 0.006 mm, both mounting faces sit perfectly flat on mating surfaces without any tilt.

3. Central Bearing Bore Double Pass Honing: The full inner bearing bore gets precision reaming then dynamic honing, no step mark, ultra low friction inner wall, no stutter when the bearing slides / rotates inside the housing.

4. All Mounting Hole Pattern 100% Aligned: Every countersink installation hole on both flanges is machined in one 5-axis workflow, no position offset, all holes line up perfectly when you mount the housing onto the machine frame.

5. Soft Brass Chip Safe Evacuation: Optimized sharp end mill geometry prevents tangled long brass chips from scratching bearing inner wall or L profile surface, no leftover micro burr hidden in inner corner transitions.

Product Core Advantages

✅ Monolithic No-Weld Rigid Structure: No separate assembled parts or weld seams, the full bearing housing keeps high stiffness even under continuous dynamic load, no structure looseness after years of operation.
✅ Brass Natural Anti-Corrosion Performance: Brass stays stable in humid, slightly acidic and alkaline workshop environments, far longer service life than plain steel bearing housings.
✅ Built-In Self-Lubricating Property: Brass's micro porous oil retaining structure reduces dry running friction and wears of the mating bearing, extends part life, you don't need to add extra lubricant very often.
✅ Ultra Fast Heat Dissipation: High thermal conductivity of brass takes away friction heat generated from long time bearing operation immediately, prevents thermal expansion jam, keeps dimension stable even under 24/7 working condition.
✅ Satin Low Maintenance Surface Quality: The fine machined satin brass finish works for most industrial applications without extra coating, reduces lead time and part cost.
✅ Drawing Driven Full Customization: The L profile shape, bearing bore dimension, flange hole layout, material and post treatment are modified to match your exact design, no compromise.

Typical Application Scenarios

• Linear motion bearing supports

• 3D printer / CNC machine carriage mounts

• Automation positioning stage brackets

• Medical instrument motion modules

• Custom robot joint link bearing housings

• Industrial equipment retrofit replacement parts

FAQ

Q: Why use 5-axis single-clamp machining for this irregular L shape brass bearing housing?
A: This non-standard L structure has two perpendicular mounting flanges and a central bearing bore, different faces need different machining orientation. If you machine them on separate 3-axis steps, you will get accumulated re-clamp position error and cause the bearing axis not perpendicular to both mounting faces. Our 5-axis one setup workflow locks all features under the same master datum, dual datum perpendicularity can reach ≤0.005 mm, no bearing jam at all.

Q: What material options do you support besides standard free cutting brass?
A: Lead-free brass for food / medical applications, pure copper for ultra high heat dissipation use, stainless steel, aluminum and titanium alloy for high strength or special environment requirements.

Q: Can you make the central bearing bore to my exact custom tolerance?
A: Yes, we can hold standard H7/H8 fit, and support ultra precision P7 press fit down to ±0.008 mm, all inner bores go through full inspection before shipping.

Q: Do you accept single custom prototype order?
A: Absolutely yes, we accept 1 piece prototype development, small batch runs and full mass production, every unit follows the same strict quality control standard.

Q: What post treatments are available for these brass housings?
A: We offer brass passivation, electropolishing, nickel / tin / silver plating and anti-oxidation coating, you can select the exact treatment to match your working environment.