Industrial & Scientific

The Best Mechanical Keyed Shafts

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Mechanical keyed shafts are essential components in a vast array of machinery, from manufacturing equipment to agricultural implements. Selecting the correct shaft ensures operational efficiency, safety, and longevity of your equipment. Understanding key specifications will help you make an informed decision for your specific industrial application.

No. 1
Hicarer 1 Pcs 1 in Round Keyed Shafting Keyed Shaft, Keyway: 1/4" x 9/64", 1ft Length, 1045 Carbon Steel
  • Versatile Package Offering: the package includes a uniquely designed keyed shaft with a diameter of 1 inches, a keyway measuring 1/4" x 9/64", and a useful length of 1ft; This precisely engineered shaft helps to prevent slippage between the shaft and the...
  • Uncompromised Material Composition: the keyed shaft is constructed with quality 1045 carbon steel; This type of steel gives the shaft an edge in terms of strength and good machinability, making it the foremost choice for various common applications
  • Common sizes: Each shaft is either turned, ground, or polished to meet diameter and straightness tolerances; Furthermore, they are crafted with pre machined full length keyways, reducing the need for additional machining
  • Sensible Solution for Saving Time: the pre keyed shafts are a convenient alternative to machining shafts; By pairing these shafts with mechanical keys (not included), the user can effectively transfer torque to gears, sprockets, and other power...
  • Broad Realm of Application: the keyed shaft features full length keyways milled along their length; These shafts serve as a component for projects that require drive shafts or rotating shafts; They can be efficiently applied in high load applications like...
No. 2
Hicarer 1 Pcs 1 in Round Keyed Shafting Keyed Shaft, Keyway: 1/4" x 9/64", 3ft Length, 1045 Carbon Steel
  • Versatile Package Offering: the package includes a uniquely designed keyed shaft with a diameter of 1 inches, a keyway measuring 1/4" x 9/64", and a useful length of 36 inches; This precisely engineered shaft helps to prevent slippage between the shaft...
  • Uncompromised Material Composition: the keyed shaft is constructed with quality 1045 carbon steel; This type of steel gives the shaft an edge in terms of strength and good machinability, making it the foremost choice for various common applications
  • Common sizes: Each shaft is either turned, ground, or polished to meet diameter and straightness tolerances; Furthermore, they are crafted with pre machined full length keyways, reducing the need for additional machining
  • Sensible Solution for Saving Time: the pre keyed shafts are a convenient alternative to machining shafts; By pairing these shafts with mechanical keys (not included), the user can effectively transfer torque to gears, sprockets, and other power...
  • Broad Realm of Application: the keyed shaft features full length keyways milled along their length; These shafts serve as a component for projects that require drive shafts or rotating shafts; They can be efficiently applied in high load applications like...
SaleNo. 3
Round Keyed Shaft – 1” Dia x 3 ft. Length with 1/4” Keyway – Cold-Rolled 1018 Steel – Precision...
  • PRECISION 1018 COLD-ROLLED STEEL: Cold-rolled 1018 offers better strength and finish for precision applications than hot-rolled 1018 or A36—ideal for projects needing tight tolerances.
  • DIY ALTERNATIVE: Pre-keyed shaft saves time and labor vs machining your own. Ready to pair with standard mechanical keys (not included) for torque transfer to gears, sprockets, and pulleys.
  • 1” DIAMETER, 3 FT LENGTH: Common sizing for a wide range of power transmission needs. Standard 1/4” keyway for compatibility with keyed components.
  • STRONG & DURABLE: 54,000 PSI yield strength and 63,000–64,000 PSI tensile strength for dependable load handling in demanding environments. Brinell hardness of 126.
  • PART NUMBER 136704: Precision shaft stock for fabrication, prototyping, or repair. Use in motor assemblies, conveyors, agricultural machinery, and industrial systems.
No. 4
1/2" Precision Cut Keyed Shaft C1018 Cold Drawn Steel Shafting; 1 ft Long Round Bar
  • Precision Cut Keyed C1018 Cold Drawn Shafting
  • Shaft size: 1/2"; Shaft length: 1 Foot(12"), 1.5 Feet(18"), 2 Feet(24") or 3 Feet(36"); Keyway size: 1/8"x1/16
No. 5
Round Keyed Shaft – 1” Dia x 6 ft. Length with 1/4” Keyway – Cold-Rolled 1018 Steel – Precision...
  • PRECISION 1018 COLD-ROLLED STEEL: Cold-rolled 1018 offers better strength and finish for precision applications than hot-rolled 1018 or A36—ideal for projects needing tight tolerances.
  • DIY ALTERNATIVE: Pre-keyed shaft saves time and labor vs machining your own. Ready to pair with standard mechanical keys (not included) for torque transfer to gears, sprockets, and pulleys.
  • 1” DIAMETER, 6 FT LENGTH: Common sizing for a wide range of power transmission needs. Standard 1/4” keyway for compatibility with keyed components.
  • STRONG & DURABLE: 54,000 PSI yield strength and 63,000–64,000 PSI tensile strength for dependable load handling in demanding environments. Brinell hardness of 126.
  • PART NUMBER 136713: Precision shaft stock for fabrication, prototyping, or repair. Use in motor assemblies, conveyors, agricultural machinery, and industrial systems.
No. 6
Round Keyed Shafting: 3/4 Dia. 3/16 Keyway, 3 ft. Length
  • Diameter: 3/4 inch
  • Keyway Width: 3/16 inch
  • Length: 3 Feet
No. 7
Hicarer 1 Pcs 5/8 in Round Keyed Shafting Keyed Shaft, Keyway: 3/16" x 3/32", Length 12 in, 1045 Carbon Steel
  • Versatile Package Offering: the package includes a uniquely designed keyed shaft with a diameter of 5/8 inches, a keyway measuring 3/16" x 3/32", and a useful length of 12 inches; This precisely engineered shaft helps to prevent slippage between the shaft...
  • Uncompromised Material Composition: the keyed shaft is constructed with quality 1045 carbon steel; This type of steel gives the shaft an edge in terms of strength and good machinability, making it the foremost choice for various common applications
  • Common sizes: Each shaft is either turned, ground, or polished to meet diameter and straightness tolerances; Furthermore, they are crafted with pre machined full length keyways, reducing the need for additional machining
  • Sensible Solution for Saving Time: the pre keyed shafts are a convenient alternative to machining shafts; By pairing these shafts with mechanical keys (not included), the user can effectively transfer torque to gears, sprockets, and other power...
  • Broad Realm of Application: the keyed shaft features full length keyways milled along their length; These shafts serve as a component for projects that require drive shafts or rotating shafts; They can be efficiently applied in high load applications like...
No. 8
Keyed Shaft 3' Length 3/4" Diameter with 3/16" Key Width KS3-3/4 Fits Universally
  • TECH INFORMATION: 3/4" Diameter, Key Width: 3/16", Length: 3'
  • REPLACES PART NUMBER KS3-3/4
  • PRIMARY FUNCTION is to transmit torque from the shaft to another component, such as a gear, pulley or sprocket
  • THE KEYED CONNECTION provides a reliable and secure way to join the rotating components
  • IN ESSENCE, A KEYED SHAFT provides a mechanical means to lock a rotating component to a shaft, enabling the transfer of rotational force
No. 9
Keyed Shaft 3' Length 1 1/4" Diameter with 1/4" Key Width KS3-1-1/4 Fits Universally
  • PRIMARY FUNCTION is to transmit torque from the shaft to another component, such as a gear, pulley or sprocket
  • THE KEYED CONNECTION provides a reliable and secure way to join the rotating components
  • REPLACES PART NUMBER KS3-1-1/4
  • TECH INFORMATION: Diameter: 1-1/4", Key Width: 1/4", Length: 3'
  • IN ESSENCE, A KEYED SHAFT provides a mechanical means to lock a rotating component to a shaft, enabling the transfer of rotational force
No. 10
1" Precision Cut Keyed Shaft C1018 Cold Drawn Steel Shafting; 3 Foot Long Round Bar
  • Precision Cut Keyed C1018 Cold Drawn Shafting
  • Shaft size: 1"; Shaft length: 1 Foot(12"), 1.5 Feet(18"), 2 Feet(24") or 3 Feet(36"); Keyway size: 1/4"x1/8

Last update on 2026-07-18 / Affiliate links / Images from Amazon Product Advertising API

How to Choose the Best Mechanical Keyed Shafts

Shaft Material

  • Steel Alloys: Stainless steel and carbon steel are common choices, offering varying degrees of strength, corrosion resistance, and durability. Stainless steel is ideal for environments prone to rust or chemical exposure.
  • Other Materials: Depending on the application, aluminum or specialized alloys might be used for lighter weight or specific performance characteristics.

Shaft Dimensions and Tolerances

  • Diameter and Length: Ensure the shaft's diameter and length precisely match the requirements of your machinery's housing and connected components.
  • Tolerances: Tight tolerances are crucial for smooth operation and to prevent premature wear. Check the specified tolerance ranges for precision applications.
  • Keyway Specifications: If a keyway is present, verify its dimensions (width, depth, length) and type (e.g., Woodruff, standard square) to ensure compatibility with the mating hub or gear.

Frequently Asked Questions

What is the primary function of a mechanical keyed shaft?
A mechanical keyed shaft transmits rotational torque from a power source to a driven component, such as a gear, pulley, or sprocket. The keyway and key prevent slippage between the shaft and the component.
How do I determine the correct shaft diameter?
The correct shaft diameter is determined by the torque it needs to transmit and the load it will bear. Consult your equipment's specifications or a mechanical engineer to calculate the appropriate size based on stress and strain requirements.
What is a keyway and why is it important?
A keyway is a slot machined into the shaft, designed to accept a key. The key fits into corresponding slots on both the shaft and the mating component, creating a positive mechanical lock that prevents relative rotation and ensures efficient torque transfer.
Are there different types of keys used with shafts?
Yes, common types include square keys, rectangular keys, and Woodruff keys. The choice of key type depends on the shaft's design, the torque requirements, and the desired ease of assembly and disassembly.