Driveshaft Yokes

Name: Driveshaft Yokes | Drive Coupler Assemblies & Gearbox Links - Frigate
Price: 249.00 USD
Availability: InStock

Driveshaft yokes endure cyclic torsional loads that generate high shear stresses, especially around the spline interfaces and yoke ears. To handle these demands, they are manufactured from high-grade alloy steels with carefully controlled microstructures.

Material Specification

Alloy Steel (AISI 4140/4340), Forged Carbon Steel (SAE 1045), or Billet Aluminum (7075-T6 for lightweight)

Mounting Type

Slip Yoke (Internal splines), Flange Yoke (4-8 bolt pattern), Weld Yoke (Tube-end prepared for welding)

U-Joint Series/Style Compatibility

1310/1330/1350 (SAE), S44/S60 (Spicer), Rzeppa CV (AWD/4WD), 1480 (Heavy-duty)

Spline Count & Profile

10–36 splines (Common: 26, 31, 35); Involute (30° PA, SAE J498 compliant)

Bore Diameter / Bolt Circle Diameter

Spline End – 1.0″–3.5″ (±0.001″), Flange End – 3″–8″ (PCD – 4x110mm, 8x165mm, etc.)

Product Description

Heat treatment processes like quenching and tempering are applied to achieve an optimal balance of tensile strength, toughness, and fatigue resistance. Additionally, precision machining of the splines ensures uniform load distribution, minimizing stress concentrations and reducing the risk of microcrack initiation and premature failure.

Overall Length/Effective Length

Slip Yoke – 4″–12″, Flange Yoke – 2″–6″ (Custom lengths ±0.005″)

Concentricity/Runout

≤0.003″ TIR (U-joint bores to spline/flange), ≤0.001″ axial play

Hardness

28–32 HRC (Core), 55–60 HRC (Splines/U-joint bores, induction-hardened)

Balance Specification

G6.3 (ISO 1940-1) Standard, G2.5 (High-speed/Race) Optional

Certification Standards

SAE J498 (Splines), ISO 14 (Fits), ASTM A322 (Alloy Steel), DIN 7526 (Balance)

Technical Advantages

Dynamic misalignment between the transmission output and differential input shafts generates vibration and uneven loading on universal joints. The yoke design incorporates tight manufacturing tolerances and concentricity controls to maintain precise angular alignment. H-yoke and end-yoke configurations are engineered to provide stable U-joint seating, reducing play and minimizing angular velocity fluctuations that cause vibration. Slip yokes are designed with controlled spline engagement length and interference fits to allow axial movement without inducing binding or excessive clearance.

Surface treatments such as carburizing, nitriding, or induction hardening are applied to critical contact areas to enhance wear resistance and surface hardness without compromising core toughness. Corrosion resistance is achieved through phosphate coatings, zinc plating, or advanced polymer-based finishes that prevent oxidation in high-moisture or chemically aggressive environments.

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Industry Applications

Automotive Drivetrains

Transmits torque between transmission and differential, accommodating angular misalignment and suspension movement in passenger and commercial vehicles.

Heavy-Duty Trucks

Handles high torque loads and multi-section driveshaft configurations, ensuring drivetrain stability under variable payload and road conditions.

Off-Road Vehicles

Compensates for extreme suspension articulation and high-angle operation, maintaining secure torque transfer on rugged terrain.

Industrial Machinery

Connects rotating shafts in power transmission systems, providing reliable torque delivery and accommodating misalignment in manufacturing equipment.

Construction Equipment

Withstands shock loads and continuous operation in articulated loaders, excavators, and cranes, ensuring uninterrupted power transmission.

Agricultural Machinery

Transfers rotational power between tractor PTOs and implements, tolerating misalignment and high cyclic loads in field operations.

Dimensional Accuracy and Customization

Manufacturing processes employ CNC machining centers with multi-axis capabilities to achieve tight dimensional tolerances on critical features such as spline profiles, bore diameters, and bolt hole patterns. Statistical process control (SPC) is implemented to monitor production consistency and ensure interchangeability with OEM driveline components.

Yoke designs facilitate ease of U-joint replacement and bearing strap installation by standardizing flange dimensions and bolt patterns. The use of hardened bearing seats and precision bore finishes reduces wear on needle bearings and prevents U-joint rotation within the yoke, a common cause of brinelling and early failure.

Having Doubts? Our FAQ

Check all our Frequently Asked Question

How does spline engagement length affect torque capacity in slip yokes, especially for frigate applications?

Spline engagement length directly influences how torque is distributed across the yoke. Longer engagement reduces localized shear stress and minimizes the risk of spline wear or failure. For frigate propulsion shafts, this is crucial because high and fluctuating torque loads are common. Proper engagement ensures reliable and efficient power transfer in demanding marine environments.

What material properties prevent yoke ear fractures during extreme articulation in frigate drivetrains?

Yoke ears must withstand high bending and torsional stresses during operation. Using quenched and tempered alloy steels like 4140 or 4340 ensures high tensile strength and impact resistance. These properties are essential in frigate drivetrains, where severe articulation can occur due to variable sea conditions. Proper material selection prevents fatigue cracks and extends component life.

Why do phased yoke orientations reduce driveline vibrations in frigate shaft assemblies?

Phased yoke orientation ensures that U-joint angles are synchronized, balancing velocity fluctuations throughout the shaft rotation. This alignment prevents harmonic vibrations that can damage driveline components. In frigate shaft assemblies, minimizing vibration is critical for both operational stability and machinery longevity. Incorrect phasing can lead to premature wear and potential system failure.

How do greaseable vs. non-greaseable CV yokes impact maintenance intervals for frigate propulsion?

Greaseable CV yokes require periodic lubrication to remove contaminants and maintain smooth operation. This is particularly important for frigate propulsion, where exposure to harsh marine conditions accelerates wear. Non-greaseable yokes, often sealed for life, reduce routine maintenance but require complete replacement at the end of their service life. Choosing the right type depends on the frigate’s maintenance strategy and operational demands.

What clearance tolerances prevent slip yoke binding during thermal expansion in frigate applications?

Slip yokes must maintain precise clearance, typically 0.10–0.15 mm, to accommodate thermal expansion during operation. This prevents binding and ensures smooth axial movement as temperatures fluctuate. In frigate propulsion systems, improper clearance can lead to spline galling or impact wear. Maintaining correct tolerances is essential for reliable and long-lasting shaft performance.

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