Shot Peening Machine for Aircraft Landing Gear
SURFEX® engineers precision landing gear peening equipment that induces controlled compressive residual stress on struts, axles, bogie beams, torque links, trunnion pins and undercarriage forgings — built around AMS‑S‑13165 / SAE J442 process practice for aerospace OEM manufacturing and MRO fatigue-life-extension programs worldwide.
What Is a Shot Peening Machine for Aircraft Landing Gear — and Why Does It Matter?
A shot peening machine for aircraft landing gear is a precision cold-working system engineered to bombard high-strength steel undercarriage components — struts, axles, bogie beams, torque links, trunnion pins and drag braces — with a controlled stream of spherical media (cast steel shot, conditioned cut wire, or ceramic beads) at a calibrated velocity, angle and dwell time. Each individual piece of media striking the surface behaves like a miniature hammer blow, leaving a shallow, overlapping indentation. Multiply that impact across the entire target surface and the result is a continuous, engineered layer of compressive residual stress just beneath the metal surface.
Why does that layer matter so much on an aircraft undercarriage? Because virtually every fatigue crack and stress-corrosion failure in a metal component begins at the surface — at a machining mark, a plating defect, a corrosion pit, or a fillet radius where stress concentrates. A compressive stress layer works against the tensile stresses that open and grow those cracks. In effect, it "pre-loads" the surface in compression, so that the applied service stresses have to first overcome that compression before they can begin to pull a crack open. This is the entire engineering rationale behind why landing gear peening equipment exists, and why it is called out as a mandatory process on almost every high-strength steel undercarriage drawing issued by airframe OEMs.
As a purpose-built landing gear fatigue strengthening system, SURFEX® equipment is designed around the geometry constraints unique to undercarriage forgings — long cylindrical strut tubes, deep bore ID surfaces, tight fillet radii, thread run-outs, and lug bores — where peening intensity and coverage must be held to tight, repeatable tolerances defined by AMS‑S‑13165, SAE J442, and customer-specific engineering process specifications used across commercial aviation, military airframe programs, business-jet manufacturing, and MRO (Maintenance, Repair & Overhaul) shot peening requalification work.
In aerospace metallurgy, a landing gear strut is only as strong as its most fatigue-critical fillet — controlled shot peening is one of the few processes engineered specifically to protect that exact point.
The Fatigue Science Behind Undercarriage Component Shot Peening
Aircraft landing gear is arguably the single most fatigue-critical structural assembly on the entire airframe. Unlike the wing or fuselage, which experience relatively gradual, distributed stress cycles in flight, the undercarriage absorbs the entire kinetic-impact energy of every single landing, taxi turn and hard-braking event in a matter of milliseconds. Over the operational life of an aircraft, that adds up to tens of thousands of severe load reversals concentrated on a handful of forgings — which is exactly why landing gear fatigue design margins are held so tight, and why the surface-treatment process specified for these parts is scrutinised so closely by design and quality engineers.
High-strength landing gear alloys such as 300M, 4340, 15‑5PH and 17‑4PH stainless are chosen precisely because of their exceptional tensile strength — but that same high strength makes them notch-sensitive. A microscopic surface flaw that would be harmless in a mild-steel bracket can become a fatigue-crack origin in a 280+ ksi landing gear strut. Grinding marks, plating hydrogen embrittlement sites, corrosion pits from runway de-icing chemicals, and even normal machining tool marks can all act as stress concentrators. Shot peening machine for aircraft struts operations are specified to mechanically "close" these surface-level flaws and to overlay them with a compressive stress field deep enough to outlast the expected crack-initiation depth for the component's design life.
Cyclic Landing & Taxi Loads
Every touchdown, taxi turn and hard-braking event cycles the strut, axle and bogie beam through severe stress reversals — the exact loading condition shot peening is engineered to resist.
Notch-Sensitive High-Strength Steel
300M, 4340, 15‑5PH and similar high-tensile landing gear alloys are highly notch-sensitive; compressive stress from peening closes surface micro-flaws before they can propagate.
Corrosion-Fatigue Resistance
Undercarriage parts face runway debris, hydraulic fluid exposure and de-icing chemicals — a peening-induced compressive layer resists stress-corrosion cracking at exposed, plated surfaces.
Extended Time-Between-Overhaul
Correctly peened landing gear components consistently demonstrate measurably longer fatigue life, directly supporting extended TBO (time-between-overhaul) intervals for airline MRO operators.
Drawing-Called-Out Repeatability
OEM engineering drawings specify an exact Almen intensity range and coverage percentage — our landing gear peening equipment is built to hold that repeatability, shift after shift, lot after lot.
Fillet, Bore & Thread Run-Out Criticality
Radii transitions, lug bores and thread run-outs are the highest stress-concentration points on a landing gear forging — precise nozzle/turbine placement ensures full, uniform coverage exactly where it is needed most.
Inside SURFEX® Landing Gear Peening Equipment: Feature by Feature
Every shot peening machine for aircraft struts and undercarriage assembly we build is custom-configured around your component drawing, target Almen intensity band, media specification and annual production volume — never a generic, relabeled blast cabinet.
Multi-Axis Nozzle / Turbine Placement
CNC-indexed nozzle or turbine positioning delivers precise, repeatable coverage on strut OD, bore ID, fillets and lug areas without operator guesswork.
Robotic Peening Integration (Optional)
6-axis robotic-arm peening for the most complex undercarriage geometries — see our dedicated robotic shot peening machine for aerospace platform for full automation.
Almen Strip Intensity Verification
Integrated Almen gauge stations and saturation-curve testing confirm peening intensity (A, N or C strip) before and continuously during production runs.
Programmable Coverage Control
Programmable dwell time, oscillation and rotation deliver 100–200% verified coverage per SAE J442 / AMS 2430 process practice.
Automatic Media Recovery & Classification
Closed-loop screw / bucket-elevator recovery with pneumatic separation removes broken shot and fines automatically, preserving media roundness for consistent intensity.
Fully Automatic Dust Collection
Cartridge-type dust collection extracts dust and fines from the peening chamber continuously, protecting media quality and the operator environment.
PLC / HMI Process Control
Touchscreen HMI with multi-recipe storage lets operators recall validated parameters — media flow, pressure, cycle time — instantly per part number.
Digital Data Logging & Traceability
Digital process-data logging (pressure, cycle time, media flow, Almen readings) supports AS9100 / NADCAP-aligned documentation demanded by aerospace quality systems.
Long-Component Handling
Extended chambers with rotary and linear fixturing accommodate full-length strut tubes, axles and drag-brace assemblies without repositioning mid-cycle.
Interchangeable Tooling & Masking Fixtures
Quick-change fixtures and masking tools protect threads, plated surfaces and non-peen zones exactly per drawing requirements.
Wear-Resistant Chamber Lining
Manganese-steel and rubber-lined chambers resist abrasive wear from continuous high-velocity media impact, extending equipment life significantly.
Export-Ready CE Build Quality
CE-marked electricals, safety interlocks and full documentation make every machine ready for international aerospace supply-chain compliance audits.
Saturation-Curve Test Station
Dedicated test benches to plot the peening saturation curve for new part numbers before releasing a component to production peening.
Noise & Vibration Controlled Cabin
Insulated peening chamber design reduces noise and vibration exposure, supporting operator safety and workplace compliance standards.
Modular Scale-Up Architecture
Machines can be specified as a single manual station or scaled into a multi-station in-line production cell as your landing gear volumes grow.
Which Landing Gear Components Can Be Engineered for Shot Peening?
From primary struts to secondary retraction linkages, SURFEX® configures a dedicated aircraft landing gear shot peening machine around the exact envelope, material grade and fillet geometry of your specific component drawing.
Main & Nose Landing Gear Struts
Full-length OD and ID peening for shock-strut tubes and piston rods that experience repeated compression-extension cycling on every landing.
Axles & Wheel Spindles
Precision axle shot peening machine cycles targeting fillet radii and bearing-seat transitions where bending-fatigue loads concentrate.
Bogie Beams
Landing gear bogie beam shot peening machine configurations engineered for multi-wheel truck assemblies on wide-body and heavy transport aircraft.
Torque Links & Scissor Links
Controlled peening of link arms and pin bores that resist anti-shimmy vibration and repeated steering-torque fatigue loads.
Trunnion Pins & Pivot Fittings
Trunnion pin shot peening equipment engineered for tight bore tolerances and the very high bearing loads these fittings carry.
Drag Braces & Side Stays
Drag brace shot peening machine cycles for retraction-system linkages that see combined bending and axial fatigue loading in service.
Actuator Rods & Piston Rods
Landing gear piston rod shot peening machine setups tuned for retraction actuators and shock-absorber piston rods.
Cylinders & Gear-Leg Housings
Bore-ID peening for shock-strut cylinders and gear-leg housings using extended lance nozzle tooling for deep internal access.
Wheel Hubs & Brake Attachment Fittings
Localised peening of hub flanges and brake-mount lugs subject to high vibration loading and repeated thermal-fatigue cycling.
Sourcing a Landing Gear Shot Peening Machine: What Aerospace Buyers Actually Search For
Procurement and quality engineers evaluating an aircraft landing gear shot peening machine manufacturer typically compare suppliers against a common checklist. Here's what matters most before you finalise a specification.
Process Specification Alignment
Confirm the manufacturer designs to AMS‑S‑13165, SAE J442/J443 and AMS 2430/2431 — not a generic industrial blast-cabinet spec.
Almen Intensity Repeatability
Ask for saturation-curve test data and repeatability tolerance across shifts — intensity drift is the #1 audit finding on peening lines.
Component-Specific Fixturing
Landing gear parts are long, heavy and geometrically complex — verify the machine is fixtured for your exact strut, axle or bogie-beam envelope.
Media Recovery & Roundness Control
Worn or broken media changes intensity unpredictably — check for automatic classification that removes non-round shot continuously.
Traceability & Data Logging
AS9100 / NADCAP-aligned audits require digital process records — confirm the HMI logs pressure, cycle time and Almen data per lot.
Automation Level vs. Volume
Low-volume MRO repeening may only need an air-operated cabinet; high-mix OEM lines usually justify CNC or robotic automation.
After-Sales & Spares Support
Landing gear peening lines cannot tolerate long downtime — confirm spare-parts inventory, response time and operator training availability.
Export Compliance & CE Marking
For international installations, confirm CE-marked electricals, safety interlocks and export documentation are included as standard.
Step-by-Step: The SURFEX® Landing Gear Shot Peening Process
Component Fixturing & Masking
The landing gear part is mounted on a rotary or linear fixture; threads, plated zones and any non-peen areas are carefully masked per the engineering drawing before the cycle begins.
Almen Strip Set-Up & Saturation Curve
Almen strips (A/N/C type) are exposed at the reference station to establish and confirm the saturation curve before production begins, in line with SAE J442 test methodology.
CNC / Robotic Nozzle Indexing
Nozzles or turbines are indexed through the pre-programmed path — including robotic-arm motion where fitted — to reach every fillet, bore and radius on the component uniformly.
Controlled Media Impact
Conditioned cut wire, cast steel shot or ceramic media is propelled at a calibrated pressure and velocity to strike the surface at the specified angle and target intensity.
Coverage & Intensity Verification
Coverage (100–200%) and Almen intensity are inspected using visual or fluorescent-dye tracer methods and calibrated gauge readings before any part is released downstream.
Media Recovery & Dust Extraction
Spent media is automatically recovered, screened and reclassified in a closed loop; dust and broken shot are removed continuously through the automatic dust-collection system.
Data Logging & Quality Documentation
Process parameters are digitally logged and exportable — supporting AS9100 / customer-specific documentation requirements for full lot-by-lot traceability.
Indicative Specifications — Landing Gear Peening Equipment
Every shot peening machine for aircraft landing gear is custom-engineered around your component envelope, target Almen band and production volume. Typical configuration ranges supplied by SURFEX®:
| Parameter | Typical Range / Option |
|---|---|
| Machine Configuration | Air-operated (nozzle), airless (turbine), CNC multi-axis, or robotic 6-axis peening cell |
| Component Length Capacity | Up to 4,000+ mm for full-length strut / axle peening (custom chamber length on request) |
| Peening Media | Cast steel shot, conditioned cut wire (CCW), ceramic shot — per AMS 2431 media specification |
| Intensity Verification | Almen A / N / C strip gauge station with saturation-curve plotting per SAE J442 |
| Coverage Standard | 100% – 200% coverage, verified via visual / fluorescent tracer inspection |
| Governing Practice | AMS‑S‑13165, SAE J442, AMS 2430 (customer-specific process specs fully supported) |
| Control System | PLC + HMI touchscreen with multi-recipe storage and digital data logging |
| Dust Collection | Fully automatic cartridge-type dust extraction from the peening chamber |
| Media Recovery | Closed-loop screw conveyor / bucket elevator with pneumatic separator |
| Fixturing | Rotary index tables, linear traverse carriages, and long-tube handling frames |
| Compliance | ISO 9001:2015, ISO 14001:2015, CE-marked electricals & safety interlocks |
| Optional Automation | 6-axis robotic peening arm for complex, high-mix component families |
Built Around the Specifications Aerospace Quality Teams Actually Audit
Aircraft landing gear peening is a specification-controlled, audited process — SURFEX® machines are engineered so your quality team can qualify the equipment directly against the process practices your customer or airworthiness authority requires.
AMS‑S‑13165
The core aerospace shot peening process specification governing intensity, coverage and media control — used as the baseline design reference for every machine we build.
SAE J442 / J443
Almen strip test-strip holders, gauges and saturation-curve test methodology are built directly into our verification stations.
AMS 2430 / AMS 2431
General shot peening practice and peening-media specification supported for cast steel, conditioned cut-wire and ceramic media selection.
ISO 9001:2015 & ISO 14001:2015
SURFEX® manufacturing quality and environmental management systems are certified for consistent, repeatable build quality.
CE Marked Build
Machine electricals, guarding and safety interlocks are engineered for CE compliance and global export readiness.
AS9100 / NADCAP-Ready Documentation
Digital process logging supports the traceability records your aerospace quality system and NADCAP-accredited process auditors will require.
Landing Gear Shot Peening — Key Terms Explained
A quick reference glossary for engineers evaluating landing gear peening equipment for the first time.
- Almen Intensity
- A measurable value of peening energy, determined by the arc height of a standardised Almen strip after exposure to the media stream — the primary control parameter in AMS‑S‑13165.
- Saturation Curve
- A plot of Almen arc height against exposure time, used to identify the point of diminishing returns and set a repeatable exposure time for production.
- Compressive Residual Stress
- A near-surface stress state induced by peening that opposes tensile service stresses, delaying fatigue-crack initiation and growth.
- Coverage
- The percentage of the target surface area that has been struck by media at least once — typically specified between 100% and 200% for critical landing gear areas.
- Conditioned Cut Wire (CCW)
- A peening media made by cutting wire into cylindrical segments and conditioning them into spherical shot — often preferred for its consistent hardness and roundness retention.
- Fillet Radius
- A rounded transition between two surfaces on a component, and one of the highest stress-concentration zones on any landing gear forging.
- Fatigue-Crack Initiation
- The formation of a microscopic crack at a surface stress concentration under repeated cyclic loading — the event shot peening is designed to delay.
- Media Classification
- The automated separation of broken, undersized or non-round shot from usable media, essential to maintaining consistent peening intensity over time.
Manual, CNC or Robotic Landing Gear Peening — Which Configuration Fits Your Line?
SURFEX® supplies landing gear peening equipment across three automation levels. If your requirement is full 6-axis robotic automation across a broader family of aerospace components, explore our dedicated Robotic Shot Peening Machine for Aerospace Industry page.
Air-Operated Nozzle Cabinet
- Best for low-to-mid volume MRO shops
- Manual or semi-automatic nozzle indexing
- Lower capital investment entry point
- Ideal for spot-repair and overhaul repeening
CNC Multi-Axis Landing Gear Cell
- Programmable multi-axis nozzle/turbine path
- Repeatable Almen intensity, shift after shift
- Best fit for OEM production runs
- Digital recipe storage per part number
Robotic 6-Axis Peening Cell
- Highest precision on complex geometries
- Full automation with minimal operator handling
- Suited to high-mix, high-volume aerospace lines
- See our robotic aerospace peening page
Aircraft Landing Gear Shot Peening Machine — Engineered in India, Installed Worldwide
SURFEX® exports landing gear and undercarriage peening equipment to aerospace manufacturers, forging houses and MRO facilities across multiple continents, backed by CE-marked build quality and complete export documentation.
India
Landing gear shot peening machine manufacturer in India, headquartered in Jodhpur, Rajasthan, serving domestic aerospace and defence OEMs and forging suppliers.
UAE & Middle East
Undercarriage component shot peening machines supplied to MRO hubs across the UAE, Qatar, Saudi Arabia and Kuwait.
USA & North America
Shot peening machines for aircraft struts exported to North American aerospace component manufacturers and overhaul facilities.
Europe
CE-compliant landing gear fatigue strengthening systems configured for European aerospace supply-chain partners and Tier-1 suppliers.
Africa
Robust, low-maintenance peening systems supplied to aviation MRO facilities across South Africa and the wider African continent.
Asia-Pacific
Landing gear peening equipment installed across growing aerospace manufacturing and MRO hubs across Asia-Pacific.
Why Aerospace Manufacturers & MRO Facilities Choose Our Landing Gear Peening Equipment
47+ Years of Peening Engineering
Among India's oldest shot blasting & shot peening OEMs, in continuous production since 1977, with deep process know-how.
Specification-Led Design
Machines engineered against AMS‑S‑13165, SAE J442 and AMS 2430 — not a generic blast cabinet relabeled for aerospace duty.
Fully Custom Engineering
Chamber size, fixturing, nozzle/turbine layout and control logic are built specifically around your landing gear component drawing.
Full Documentation Support
Digital data logging and Almen verification records support your AS9100 / NADCAP-aligned quality audits from day one.
6,000+ Machines, Global Installs
A proven installation base across India, the Middle East, Africa, Europe and Asia-Pacific over nearly five decades.
Strong After-Sales Support
Installation, operator training, annual maintenance and a genuine spare-parts inventory keep your peening line running with minimal downtime.
More From SURFEX® Shot Peening & Surface Finishing Range
Talk to Our Landing Gear Peening Equipment Engineers
Share your component drawing, material grade and target Almen intensity — SURFEX® will propose the right shot peening machine configuration for your aircraft landing gear or undercarriage overhaul program.
Frequently Asked Questions
Common questions from aerospace OEM and MRO engineers evaluating our landing gear shot peening equipment.
It is a controlled cold-working system that bombards landing gear struts, axles and undercarriage forgings with spherical media to induce compressive residual stress at the surface, improving fatigue strength and extending component service life under repeated landing loads.
Landing gear absorbs cyclic impact loads on every take-off and landing. Shot peening closes surface micro-flaws and builds a compressive stress layer that resists fatigue-crack initiation, corrosion-fatigue and stress-corrosion cracking, which is why it is specified on nearly all high-strength steel undercarriage components.
Our landing gear peening equipment is configured for main and nose gear struts, axles, bogie beams, torque links, trunnion pins, drag braces, actuator/piston rods, cylinders and wheel-hub fittings.
Machines are engineered around AMS‑S‑13165, SAE J442/J443 (Almen strip testing) and AMS 2430/2431 peening practice, and can be adapted to customer-specific aerospace process specifications.
Shot blasting removes scale, rust and contaminants for surface cleaning. Shot peening is a controlled fatigue-strengthening process that uses calibrated intensity and coverage to induce compressive residual stress — it is a mechanical property enhancement, not a cleaning operation.
Yes. We supply air-operated, CNC multi-axis, and robotic 6-axis peening configurations. For full robotic automation across broader aerospace components, see our Robotic Shot Peening Machine for Aerospace Industry range.
Cast steel shot, conditioned cut wire (CCW), and ceramic shot are commonly used, selected per AMS 2431 media specifications and the intensity/finish requirement of the specific landing gear component.
Intensity is verified using Almen A, N or C test strips mounted at reference locations, with a saturation curve plotted per SAE J442 to confirm the process meets the drawing-specified Almen intensity range.
Yes. We regularly engineer landing gear fatigue strengthening systems for MRO overhaul lines, including compact cabinet formats for spot-repeening and full production cells for OEM manufacturing volumes.
Lead time depends on automation level and fixturing complexity. Standard air-operated cabinets typically ship faster, while custom CNC or robotic landing gear cells require a longer engineering and build cycle — share your drawing for a confirmed schedule.
SURFEX® has supplied over 6,000 shot blasting and peening machines across India, the Middle East, Africa, Europe and Asia-Pacific, with CE-marked electricals and export-ready documentation.
Pricing depends on automation level (air-operated, CNC, or robotic), chamber size, and control/documentation requirements. Share your component drawing and Almen intensity requirement for a custom technical quotation.
Contact our engineering team via the quote form or WhatsApp on +91 98290 22624 with your component drawing, material grade and Almen intensity requirement, and we will propose the right machine configuration.