Single-Setup Bore Coaxiality
Every bearing housing supporting a shaft at two or more points requires those housing bores to be coaxial.
Custom
Bearing Housing
Custom Bearing Housing made to your drawing. Review bore size, outside diameter and mating fits, material, finishing and inspection requirements before production.
IATF 16949 & AS9100D quality systems
Material and inspection scope reviewed with your drawing
Prototype and repeat-production enquiries
Finishing and documentation agreed with the order
DFMDrawing & process review
QCAgreed inspection plan
Bearing Housing: Product Overview
Custom bearing housings are reviewed around bore size, outside diameter and mating fits. The machining route, material, finishing and inspection plan follow the approved drawing and intended application.
- Single-setup bore coaxiality guaranteeMulti-setup machining introduces ±0.010–0.025mm eccentricity from chuck re-registration error.
- Thermal expansion compensation as standardAluminum housing bores grow 0.050–0.120mm from ambient to operating temperature.
- eVTOL bushing precision machiningPTFE-lined, bronze oil-impregnated, and PEEK engineering bushings each require material-specific CNC parameters.
- Bearing Fits and Bore ReviewReview bore size, outside diameter and mating fits and functional requirements before defining the process.
Why CNCPioneer for Bearing Housing?
Coordinate geometry, material, finishing and inspection around the part's intended function.
Thermal Expansion Compensation
eVTOL motor bearing housings in aluminum (CTE 23.6 ppm/°C) operating at 100°C expand the housing bore by nearly 0.1mm.
Bushing Precision Machining
Self-lubricating PTFE-lined bushings require PCD tooling and temperature-stabilized machining for bore accuracy ±0.003mm; bronze bushings require optimized rake geometry to prevent built-up edge; PEEK bushings require fluoropolymer-adjacent machining discipline.
Mass Optimization Through DFM FEA
An eVTOL bearing housing block 50g heavier than optimum multiplies across 40–80 critical bearing interfaces to produce 2–4 kg of avoidable structural mass.
Complete Portfolio From One Source
Review bore size, outside diameter and mating fits and functional requirements before defining the process.
China eVTOL Cost Advantage
CNCPioneer delivers eVTOL bearing housing machining at 40–60% below US and European aerospace precision shops at equivalent AS9100D tolerance and documentation.
Bearing Housing We Manufacture
Explore representative configurations and share your drawing for a product-specific review.
Rotor System Bearing Housings
Flapping hinge bearing housing blocks (articulated rotor head) with bore ±0.003mm H7 for spherical plain bearing engagement; lug bore pair coaxiality ±0.005mm; perpendicularity of bearing bore axis to hinge pin axis 0.010mm.
Motor and Drivetrain Bearing Housings
Outboard motor bearing housings for overhung propeller loads with angular contact pair (DB arrangement) bores ±0.002mm and pair coaxiality ±0.005mm.
Flight Control System Bearing Housings
Collective pitch control spider center guide bearing housings ±0.005mm.
Landing Gear Bearing Housings
Landing gear pivot bearing housings in TC4 AMS 6931 STA for emergency sink-rate design loads (2.4–4.0 m/s) with FEA-verified minimum wall at impact design load × 2.0 safety factor.
Actuator and Control Mechanism Bearing Housings
Linear actuator bearing housing bodies with actuator body outer diameter interface ±0.020mm clearance fit.
eVTOL Bushing Programs
PTFE-lined self-lubricating bushings with PCD-machined bores ±0.005mm and thermal expansion allowance for CTE 100–125 ppm/°C.
Industries & Applications
Match the component to its operating environment, assembly interfaces and documentation requirements.
Aerospace
Custom bearing housings for aircraft actuators and accessory drive assemblies. We machine bearing bores, shoulders and mounting faces to your drawing, with material traceability and agreed dimensional inspection.
Explore aerospace machining
Automotive
Bearing housings for electric motors, gearboxes and automotive drive modules. We coordinate bore concentricity, mounting-hole position and sealing interfaces, with prototype and batch production matched to your specifications.
Explore automotive machining
Oil & Gas
Bearing housings for pumps, compressors and rotating equipment. Material selection, bearing fits, seal grooves and lubrication passages are reviewed against operating temperature, corrosion exposure and maintenance needs.
Explore oil & gas machining
Railroad
Bearing housings for rail vehicle auxiliary drives and gearbox assemblies. We machine bearing seats and mounting datums, with material, finish and inspection requirements reviewed for vibration and outdoor service.
Explore railroad machining
Medical
Precision bearing housings for diagnostic equipment, laboratory automation and compact drive assemblies. We review bore fit, shaft alignment, burr control and surface finish to suit your device design and cleaning requirements.
Explore medical machining
Semiconductor
Bearing housings for wafer-handling robots, precision stages and inspection equipment. We machine bearing seats and mounting interfaces to support repeatable motion, with specified burr control, cleaning and packaging.
Explore semiconductor machiningMaterials
Materials for Bearing Housing
Confirm the exact grade, delivery condition and finish compatibility with your drawing.
Primary Structure
TC4 Titanium AMS 4928
Non-magnetic; CTE 8.6 ppm/°C; 950 MPa yield.
Maximum Strength
TC4 Titanium AMS 6931 STA
Titanium options for weight-sensitive and corrosion-resistant components. Confirm the approved grade, material condition and surface requirements.
Lightweight Standard
7075-T6 Aluminum AMS-QQ-A-225
Aluminum options for lightweight machined components. Confirm the alloy, temper, finishing allowance and critical assembly dimensions.
SCC Resistant
2024-T4 Aluminum AMS-QQ-A-225
Aluminum options for lightweight machined components. Confirm the alloy, temper, finishing allowance and critical assembly dimensions.
Economical / Weldable
6061-T6 Aluminum AMS 2770
Aluminum options for lightweight machined components. Confirm the alloy, temper, finishing allowance and critical assembly dimensions.
High Strength & Corrosion Resistance
17-4PH H900 Stainless AMS 5643
Magnetic precipitation-hardening stainless steel. Specify the H900 condition, required surface treatment and dimensional inspection against the approved drawing.
Moisture / UHV
316L Stainless AMS 5653
Stainless steel options for corrosion-resistant components. Confirm the grade, delivery condition, surface finish and cleaning requirements.
Highest Fatigue
4340 Steel QT HRC 40
Confirm the exact material grade, condition, heat-treatment requirements and certificates against the approved drawing.
Finish selection
Surface Treatments for Bearing Housing
Select the finish around the specified material, functional surfaces and service conditions. Confirm process details and acceptance requirements with your drawing.
Appearance & protection
Type II/III Anodize
Standard corrosion protection for 7075-T6 and 6061-T6 aluminum eVTOL bearing housing bodies — 5–10μm clear anodize preventing moisture corrosion while maintaining electrical insulation.
- Best for
- Specified material and service conditions
- Specify
- Process, color sample & thickness
Finish selection
Shot Peen
Review shot peen against the material, functional surfaces and intended service conditions.
- Best for
- Drawing-specific surface requirements
- Specify
- Process, functional surfaces & acceptance
Finish selection
Electroless Nickel
Review electroless nickel against the material, functional surfaces and intended service conditions.
- Best for
- Drawing-specific surface requirements
- Specify
- Process, functional surfaces & acceptance
Corrosion control
Passivation
All 316L and 17-4PH stainless eVTOL bearing housing components — passivation restores passive oxide layer at all machined surfaces; documented per ASTM A967 method for manned aviation program material records.
- Best for
- Stainless steel surface requirements
- Specify
- Method, masking & inspection records
Finish selection
DLC Coating
Diamond-like carbon (1–3μm, μ 0.05–0.15, HV 2,000+) for PEEK and metal bushing bore running surfaces in high-cycle eVTOL pitch control applications.
- Best for
- Drawing-specific surface requirements
- Specify
- Process, functional surfaces & acceptance
Finish selection
Alodine Class 3
Chromate conversion coating for aluminum bearing housings and bushing mounting bodies requiring electrical conductivity alongside corrosion protection.
- Best for
- Drawing-specific surface requirements
- Specify
- Process, functional surfaces & acceptance
Production Capacity
Machining resources for drawing review, prototypes and repeat-production programs.
5-axisMulti-face machining
CNCPrototype & batch machining
Inspection & documentation
Quality Control for Bearing Housing
Review material identity, machining datums, functional dimensions and production records for your component.
IATF 16949AS9100D
To drawingCritical dimensions
As agreedInspection scope
Final tolerances, inspection coverage and acceptance criteria are confirmed against your drawing, material and geometry.
Material Verification
- Check
- Specified grade, material condition and lot identity.
- Verify
- Material certificates and agreed identification checks.
- Records
- Material certificates and required traceability records.
Machining Process Control
- Check
- Bore size, outside diameter and mating fits.
- Verify
- Drawing datums, setup planning and in-process inspection.
- Records
- Agreed critical-feature and process inspection records.
Dimensional Inspection
- Check
- Functional dimensions, mating features and surface condition.
- Verify
- Suitable measuring equipment and drawing-specific gauges.
- Records
- Dimensional reports and specified finish results.
Production Documentation
- Check
- First-piece approval, production records and delivery requirements.
- Verify
- The inspection plan and customer approval process.
- Records
- Agreed document pack, including PPAP or FAIR when required.
Agree Your Quality Document Pack
Confirm the certificates, inspection reports and production records needed for your order when sharing your drawing.
Bearing Housing FAQ
Which Bearing Housing designs can you manufacture?
The product range includes Rotor System Bearing Housings, Motor and Drivetrain Bearing Housings, Flight Control System Bearing Housings. Custom geometry is reviewed against the approved drawing.
- Include the mating interfaces, critical datums and expected order quantity.
Which materials can I specify?
Material options include TC4 Titanium AMS 4928, TC4 Titanium AMS 6931 STA, 7075-T6 Aluminum AMS-QQ-A-225. The exact grade and condition should be confirmed for your application.
- Include material certificate, finish and any restricted-substance requirements with your enquiry.
What should I include in the drawing?
Define bore size, outside diameter and mating fits, together with datums, tolerances and required surface condition.
- Include a 2D drawing and 3D model where available.
- Identify the dimensions that affect assembly or function.
What finishing and inspection records can be requested?
Finishing options include type ii/iii anodize, shot peen, electroless nickel. Applicability is reviewed against the specified material and geometry.
- Agree material certificates, dimensional reports and any PPAP or FAIR requirements with the order.
How are pricing and lead time confirmed?
Pricing and delivery are confirmed after reviewing the drawing, material availability, quantity, machining route, finishing and inspection scope.
- Prototype and repeat-production schedules are quoted for the specific order.
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EV Housing CNC MachiningCUSTOM CNC PARTS
Get a Quote for Bearing Housing
Share your drawing or 3D model, material, critical dimensions, finish and order quantity. We’ll review the machining route, inspection scope and delivery requirements.
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