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Throttle Lever Arms

Name: Throttle Lever Arms | Pilot Throttle Control Arms - Frigate
Price: 249.00 USD
Availability: InStock

Throttle Lever Arms are essential torque transmission components linking control input to throttle body actuation. They operate under cyclic torsion, axial load shifts, and misalignment forces across dynamic conditions, requiring robust mechanical integrity.

Material Specification

Aluminum 6061-T6 (AMS 4025), Stainless Steel 17-4PH (AMS 5643), or Carbon Fiber Composite (AMS 3984)

Overall Dimensions

Length – 200-400mm, Width – 30-60mm, Thickness – 8-15mm (Profile-optimized via FEA)

Mounting/Pivot Design

Bronze Bushing (SAE 841), Ball Bearing (ABEC-3), or Tapered Roller Bearing (ISO 355)

Control System Interface

Spline Shaft (SAE J498), Potentiometer/Gear Segment, or FBW Sensor Mount

Grip Ergonomics

Knurled (0.5mm pitch), Overmolded Elastomer (50-70 Shore A), Heated Option

Product Description

To perform reliably over time, these arms must resist thermal expansion, vibration-induced fatigue, and repeated linkage motion—without introducing hysteresis or performance drift. Buyers prioritize factors such as tolerance retention, surface wear resistance, fatigue life, and geometric stability throughout the component’s operational lifecycle.

Load Capacity

Pilot Input – 50-150N, Structural – 500N Ultimate (FAR 25.1309)

Range of Motion

30°-90° Angular Travel, Adjustable Stops (±5°)

Stiffness/Deflection

≤0.5° Twist Under Load, Natural Frequency >80Hz

Dimensional Tolerances

Pivot Bore – ±0.01mm, Spline – Class 4 Fit, Profile – ±0.2mm

Certification Standards

FAR 25.777, AS9100, MIL-STD-1472 (Ergonomics), DO-160 (EMI)

Technical Advantages

Throttle Lever Arms must provide consistent torque transfer under variable load conditions without backlash or deformation. The lever arms are designed using solid modeling with load vector analysis to maintain a uniform stress distribution across the arm body and hub interface. Moment arms are optimized using center-of-force vectoring to prevent non-uniform deflection during high-load operation. Broached or spline interface geometries are selected based on torque transmission requirement and mating shaft tolerances. All arms are verified through rotational torque testing over extended actuation cycles, ensuring the angular fidelity does not degrade under mechanical fatigue.

Engine assemblies often impose tight packaging constraints and multi-axis alignment requirements. Each throttle lever arm is precision machined to positional tolerances under ±0.02 mm for bore diameters, critical faces, and centerlines. Geometric dimensioning and tolerancing (GD&T) principles are applied during design and inspection to control concentricity, parallelism, and perpendicularity for shaft-mounting features. This ensures consistent fitment across production batches and eliminates forced alignment during assembly, which can otherwise lead to premature joint wear or torque loss. Supplier traceability systems are implemented to link every batch to CMM inspection data, verifying production-level dimensional control.

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Industry Applications

Aerospace Turboprop Engines

Used to mechanically control propeller pitch and fuel metering valves, maintaining precise actuation under vibration and thermal cycling conditions.

Heavy-Duty Diesel Engines

Transfers pedal or actuator input to the throttle body, ensuring consistent torque response under high-load and off-road duty cycles.

Agricultural Machinery Powertrains

Facilitates throttle control for tractors and harvesters, enabling stable speed modulation under fluctuating field loads and dust exposure.

Military Ground Vehicles

Interfaces with manual or servo control systems for throttle modulation, maintaining performance under extreme shock, humidity, and sand intrusion.

Rail Locomotive Diesel Systems

Connects governor output to fuel rack linkage, enabling reliable control of engine RPM under variable load and long operating hours.

Marine Propulsion Systems

Handles throttle adjustments in corrosion-prone environments, ensuring accurate angular response under constant vibration and saltwater-induced wear conditions.

Control Over Hysteresis and Wear Progression

Lever arm performance over time is defined by its ability to avoid mechanical play, galling, or surface degradation. To mitigate wear propagation, surface roughness for all pivot interfaces is controlled under Ra 0.4 µm post-heat treatment. Bearing surfaces are either integrated with bushings or machined to accept self-lubricating polymer inserts, depending on actuation cycle counts and axial force ranges.

Throttle Lever Arms must integrate across multiple engine platforms with differing mounting architectures, cable paths, and motion ranges. Designs are configurable with customizable offset angles, hub diameters, and arm lengths to align with system-specific kinematics.

Having Doubts? Our FAQ

Check all our Frequently Asked Question

How does Frigate ensure geometric consistency of throttle lever arms across large-volume production?

Frigate uses CNC machining with in-process probing to control all critical dimensions within ±0.01 mm. Statistical Process Control (SPC) is implemented to monitor dimensional variance across batches. Coordinate Measuring Machines (CMM) verify bore positions, arm lengths, and angular offsets. This ensures every unit matches design geometry, even in high-throughput production.

What testing methods does Frigate use to evaluate lever arm fatigue under cyclic loading?

Frigate conducts torsional fatigue testing using servo-electric test rigs that simulate real-world actuation cycles. The test includes varying torque profiles and thermal exposure to replicate engine conditions. Fatigue life is validated for over 1 million cycles without crack initiation. Results are recorded as part of the PPAP documentation.

How does Frigate prevent corrosion in throttle lever arms used in marine or outdoor applications?

Fregatte applies zinc-nickel plating or phosphate coatings based on environmental requirements. Salt spray testing is conducted per ASTM B117 to evaluate corrosion resistance. Base materials are selected for low carbon and sulfur content to reduce surface porosity. This ensures stable performance in salt-laden or moisture-heavy environments.

What type of material traceability does Frigate provide for throttle lever arms?

Frigate assigns batch-level material trace codes and retains mill test certificates (MTCs) for each heat lot. Every lever arm can be traced back to its raw material source through serialized markings. Material properties such as yield strength, hardness, and grain structure are verified. This supports compliance with IATF 16949 and customer-specific quality plans.

How does Frigate handle custom throttle lever arm geometries for non-standard engine layouts?

Frigate offers full design-for-manufacturability (DFM) support using customer-supplied CAD or kinematic data. Custom spline interfaces, offset angles, and multi-hole arms can be developed and prototyped rapidly. Tooling is built with modular inserts to accommodate geometry variation. This allows integration with unique throttle layouts without requalifying the full assembly.

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LOCATIONS

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9/1, Poonthottam Nagar, Ramanandha Nagar, Saravanampatti Coimbatore-641035, Tamil Nadu, Indien. ㅤ

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