Nadella linear components and bearings

NADELLA has developed over time from being a supplier for antifriction bearings, linear guide components and linear axes to a competent system partner for all areas of  linear and rotational motion technology.


Nadella is specialised in the design and production of linear guide rail and rollers, divided into heavy and light load families, suitable for all applications where high speed and low noise are required and the operating environment is very aggressive. Our rails can be supplied with a single length of 6 meters, can be cut and drilled according to the customers’ needs and can be jointed together.

The main application fields of Nadella’s linear guide systems are the following: Robotic, handler and pick & place systems, Packaging, Machine Tools, Wood Working Machines, Assembly Machines, Measure Instruments, Electro-medical Machines , Print machines.


Needle bearings are a standard element of a rotational motion system. Needle bearings are used in applications where high load capacity, high precision and small overall dimensions are required. Nadella offers a big range of needle bearings.

The strength of Nadella’s production consists also in the ability of producing special items at a reasonable price. Every bearing contains the long experience acquired from Nadella through decades of design, production and application.

Products range

  • Needle bushes, full complement retained or with cage
  • Needle cages
  • Bearings with cage guided needles
  • Full complement needle bearings
  • Needle rollers
  • Thrust bearings with needles and with rollers
  • Combined bearings with needles (RAX)
  • Precision combined bearings with adjustable preload
  • Sealing rings


Linear modules for high speeds: universal application as a low-cost single axis or in combination with further axes from our system range for complex multi-axis systems. Nadella’s building block system for linear modules provides all linear motion technology components up to the motor interface:

Systems with roller guides or THK recirculating ball guides, with belt drive or ball screw drive, suitable for direct, cross or portal links or as a single module system. You can realise your design quickly and precisely using these universal motion and positioning modules.


Nadella telescopic slides are available in different versions, which are classified according to their extension ratio and their load capacity into part extensions, full extensions, heavy-duty extensions and over extensions.

This results in a large number of versions, depending on the stroke, height, load and available installation space. Effective production of the telescopic rails enables short delivery times with high flexibility.

Nadella telescopic slides are always protected against corrosion. As standard, the steel receives a blue chromate coating. Other colours such as black or olive and other surface treatments such as zinc or nickel plating are available. For applications in the food sector or shipbuilding, stainless steel slides are available.


DURBAL produces and develops antifriction bearing and plain bearing rod ends and spherical plain bearings of outstanding quality, as well as hydraulic rod ends, clevises, angle joints and accessories.

Our strengths lie in the manufacture of individual bespoke system solutions for customers, such as heavy-duty systems and high quality special products.


The MONORAIL BM system, with the new-generation guides and recirculating ball bearings, guarantees high load capacity, high precision of movement, rigidity and smoothness; furthermore, the new pad, redesigned to simplify the movement of the balls in the recirculation tracks, allows a silent and homogeneous rolling.


The adjusting locking/unlocking nuts and rings are used whenever precision mechanisms require a precision clamping as well as a powerful and safe locking, but above all for adjusting and clamping all type of bearings. The original clamping system is constituted from a part of the threaded section of the adjusting nut or ring (threaded clamping spring).

When tightening the hexagon grub screws clamping is applied with a very strong pressure onto the threaded spring which meshes perfectly into the corresponding threads of the shaft or spindle. The Nadella adjusting nuts and rings can be easily mounted, dismounted and reused without losing the precision features.


The axial ball sleeves are made to be applied in simple linear precision movements, without travel limits and are mounted on ground and hardened steel shafts. They consist of an outer ring in hardened, ground and lapped steel, a brass or polyamide cage and precision steel balls.

They are normally completed with lateral sealing rings in plastic material. They are supplied in different accuracy classes and, with a friction coefficient of about 0.002, they allow the longitudinal displacement of loads, even high ones, with a minimum expenditure of energy and strength.


Cardan joints made by molding from very thick steel sheets, are intended for use on mechanical transmissions and special steering systems. They are derived from cardan joints made for the steering of vehicles that equip large-sized cars and heavy trucks. The forged steel cruises are supported by four Nadella roller cases equipped with sealing rings. For operation in aggressive environments they are protected against oxidation by black paint or can be galvanized.

In addition to cardan joints Nadella is able to provide complete cardan transmissions as well as steering columns for cars, city cars, small road vehicles, floor cleaning machines and various vehicles. Massive universal joints and telescopic transmissions Solid universal joints obtained from solid, particularly suitable for power transmissions (up to 700 Nm) and for applications in the most diverse industrial sectors. Depending on the specific application, the following are available: in the version with cruise on sliding pins (LE and GE series) or supported by four roller cases (WE series). They can be supplied in stainless steel also in telescopic versions.