We manufacture high-performance locking rings for use in mechanical systems, such as spindles, rotating shafts and transmission assemblies found in machine tools and industrial automation.
Our locking rings are designed to provide stable clamping, precise alignment and long service life, even under high dynamic loads.
A locking ring is a key mechanical component used in clamping and fixing systems. It is installed on shafts, spindles, bearings, pulleys or rotating assemblies to:
lock a component in the required position, ensure concentricity and correct coupling, maintain preload during operatio, prevent loosening, vibration and misalignment, guarantee dimensional stability under critical operating conditions
Locking rings are used wherever precise, controlled and repeatable fixing is required: in CNC machining centres, transmission systems, rotating assemblies and precision engineering applications.
Notably, in machine tools, locking rings are used to secure spindles, drive shafts, toolholders and components subject to high rotational speeds.This improves overall system rigidity and helps reduce wear, vibration and unwanted micro-movements.
Depending on the clamping function and installation method, OMGM manufactures several types of locking rings:
This is the most common type. It is screwed directly onto the shaft and locks the component by axial force or preload. Suitable for bearings, pulleys, hubs and clutches.
Used where controlled tightening is required using hook spanners, pin wrenches or sector keys. This solution allows more accurate control of tightening torque.
A system consisting of a locking ring combined with a locknut, used in high-vibration applications or continuous duty cycles where maximum resistance to loosening is required.
Manufactured to customer specifications, with personalised geometry, materials and tolerances. Used for complex functional locking solutions in rotating assemblies, spindles and non-standard kinematic systems.
Allows rapid locking by means of a radial screw. Mainly used in adjustment or positioning systems.
Regardless of the configuration, each locking ring is designed to ensure stability, rigidity and accuracy, even under dynamic operating conditions.
To ensure high performance across a wide range of applications, locking rings are manufactured from materials selected according to the clamping method, applied loads and operating environment.
Commonly used materials include:
1
CARBON STEELS
2
ALLOY STEELS
used where higher toughness, hardness and fatigue resistance are required;
3
STAINLESS STEELS
per applicazioni che richiedono protezione dalla corrosione o condizioni igieniche più severe
4
GHISA SFEROIDALE O LEGHE DI ALLUMINIO AD ALTA RESISTENZA
selected for applications requiring corrosion resistance or higher hygiene standards.
Where reduced weight and good structural stability are required, cast iron or high-strength aluminium alloys can also be used, particularly in handling systems and automatic machinery.
The manufacture of locking rings follow a structured and fully controlled process, designed to ensure high accuracy even for components used in critical applications.
Machining is carried out using high-precision CNC turning. More complex features, such as front slots, radial milling operations or special configurations, are produced on multi-axis CNC machining centres, allowing accurate and repeatable manufacture of non-standard parts.
Functional surfaces requiring tight concentricity and flatness are finished by precision grinding, ensuring dimensional stability and reliable performance over time. Each stage of the process is supported by advanced dimensional inspection, including 3D measurement of critical features, to confirm full compliance with technical drawings. This approach allows locking rings to be produced with consistent quality and high-quality finishes.
PARAMETER
Machinable diameters
Materials
Tolerances
Machining processes
Heat treatments
CAPACITY / DETAILS
From Ø20 mm up to Ø800 mm
Carbon steel, stainless steel, special alloys, cast iron, aluminium
Up to 5 µm on diameters and flatness
CNC turning, milling, threading, grinding
Hardening, quenching and tempering, nitriding, nitrocarburizing
PARAMETER
Surface treatments
Finishes
Production batches
Configurations
CAPACITY / DETAILS
Zinc plating, phosphating, nickel plating, bluing, anodisation
Roughness Ra ≤ 1.6 µm (lower on request)
Single components and small batches up to 50 pieces
Threaded, slotted, with front holes, with locknut, custom designs
Locking rings are used across many of the industrial sectors served by OMGM, thanks to their ability to ensure stable clamping, precise alignment and high reliability, even under demanding work conditions.
Used in tool change systems, feed units, internal handling and positioning mechanisms, where maximum accuracy and repeatability are required.
The main application sector for mechanical cams. They are essential for synchronised motion, continuous high-speed cycles, pick-and-place systems, dosing units and complex movements typical of automatic machinery.
Applied in blister machines, dosing equipment, sterile packaging lines and high-cleanliness automatic systems, where controlled and consistent motion is critical for the end product quality.
Used in mechatronic systems, actuators, control mechanisms and kinematic assemblies operating under vibration and severe environmental conditions.
Used to synchronise processing and packaging operations, ensuring reliable performance in environments subject to frequent washdowns and repetitive high-speed cycles.
Integrated into automated modules and actuators where rotary motion must be converted into precise linear or reciprocating movement.
Used in applications exposed to extreme conditions, including vibration, high loads, thermal shock and corrosive environments.
A locking ring applies clamping force to a shaft or component, holding it in position and preventing unwanted rotation or axial movement. Clamping can be achieved through threading, mechanical preload or a locknut system.
Locking rings are used in spindles, shafts, gears, rotating systems, machine tools and precision mechanisms that require stable and repeatable fixing.
Yes. We manufacture custom locking rings to customer drawings using CNC machining, with personalised tolerances and materials selected according to the application sector.
