Automation & Power Transmission

The SIT VARIO variator belts are special V-belts designed for variable speed transmissions using adjustable-diameter pulleys. These belts are designed to transmit high power in systems with continuous speed adjustment, maintaining high performance and service life even in severe conditions.

The cast iron monoblock pulley section A, 2 grooves is a solid and massive component, designed for double V-belt drives. Being monoblock, it must be bored for the mounting shaft. Various diameters are available, to suit different power transmission requirements.
⚠️ Note: the photo is for illustrative purposes only; the actual product may differ slightly in appearance.

The cast iron monoblock pulley, section A, 3 grooves is a solid and heavy-duty component, designed for multiple V-belt drives. Being monoblock, it must be bored for the mounting shaft. Various diameters are available, to suit different power transmission requirements.
⚠️ Note: the photo is for illustration purposes only; the actual product may differ slightly in appearance.

The cast iron monoblock pulley, section A, 4 grooves is a solid and heavy-duty component, designed for multiple V-belt drives. Being monoblock, it must be bored for the mounting shaft. Various diameters are available, to suit different power transmission requirements.
⚠️ Note: the photo is for illustration purposes only; the actual product may differ slightly in appearance.

The cast iron monoblock pulley, section A, 5 grooves is a solid and heavy-duty component, designed for multiple V-belt drives. Being monoblock, it must be bored for the mounting shaft. Various diameters are available, to suit different power transmission requirements.
⚠️ Note: the photo is for illustration purposes only; the actual product may differ slightly in appearance.

The cast iron monoblock pulley, section B, 1 groove is a solid and heavy-duty component, designed for V-belt drives. Being monoblock, it must be bored for the mounting shaft. Various diameters are available to suit different power transmission requirements.
⚠️ Note: the photo is for illustration purposes only; the actual product may differ slightly in appearance.

The cast iron monoblock pulley, section B, 2 grooves is a solid and heavy-duty component, designed for double V-belt drives. Being monoblock, it must be bored for the mounting shaft. Various diameters are available, to suit different power transmission requirements.
⚠️ Note: the photo is for illustration purposes only; the actual product may differ slightly in appearance.

The cast iron monoblock pulley, section B, 3 grooves is a solid and heavy-duty component, designed for multiple V-belt drives. Being monoblock, it must be bored for the mounting shaft. Various diameters are available, to suit different power transmission requirements.
⚠️ Note: the photo is for illustration purposes only; the actual product may differ slightly in appearance.

The cast iron monoblock pulley, section B, 4 grooves is a solid and heavy-duty component, designed for multiple V-belt drives. Being monoblock, it must be bored for the mounting shaft. Various diameters are available, to suit different power transmission requirements.
⚠️ Note: the photo is for illustration purposes only; the actual product may differ slightly in appearance.

The cast iron monoblock pulley, section B, 5 grooves is a solid and heavy-duty component, designed for multiple V-belt drives. Being monoblock, it must be bored for the mounting shaft. Various diameters are available to suit different power transmission requirements.
⚠️ Note: the photo is for illustration purposes only; the actual product may differ slightly in appearance.

The cast iron monoblock pulley, section B, 6 grooves is a solid and heavy-duty component, designed for multiple V-belt drives. Being monoblock, it must be bored for the mounting shaft. Various diameters are available, to suit different power transmission requirements.
⚠️ Note: the photo is for illustration purposes only; the actual product may differ slightly in appearance.

The cast iron monoblock pulley, section C, 1 groove is a solid and heavy-duty component, designed for single V-belt drives. Being monoblock, it must be bored for the mounting shaft. Various diameters are available, to suit different power transmission requirements.
⚠️ Note: the photo is for illustration purposes only; the actual product may differ slightly in appearance.

The cast iron monoblock pulley, section C, 5 grooves is a solid and heavy-duty component, designed for multiple V-belt drives. Being monoblock, it must be bored for the mounting shaft. Various diameters are available, to suit different power transmission requirements.
⚠️ Note: the photo is for illustration purposes only; the actual product may differ slightly in appearance.

The perforated belt fastener is a component designed to connect and join two ends of a perforated belt, making it possible to obtain a custom length with no limits. Thanks to the fastener, perforated belts can be adapted to any plant or transmission system, making the transmission modular and flexible.

Housing with UCF 218‑56 bearing, single unit with cast iron housing, ideal for 3 1/2” (≈ 90 mm) shafts in mechanical and industrial applications.

Housing with UCF bearing (housing + bearing series), ideal for supporting rotating shafts in machinery, transmissions and industrial applications. Available in different variants such as UCF203, UCF204, UCF205 and other sizes, each referring to the size of the bearing bore.

Housing with UCFC bearing, compact unit with housing and integrated bearing, ideal for mechanical and industrial applications with simple and reliable mounting.

Housing with UCFL bearing, compact unit with housing and integrated bearing, ideal for mechanical and industrial applications requiring simple mounting and reliable support of rotating shafts.

Housing with UCP bearing, compact unit with cast iron housing and integrated ball bearing, ideal for supporting rotating shafts in mechanical and industrial applications with simple and robust mounting.

Housing with UCT bearing, pillow block type unit with cast iron housing and inserted ball bearing, ideal for supporting and guiding rotating shafts in mechanical and industrial applications.

Single-phase 1.5 kW inverter for electric motors, with 220 V supply and integrated control panel for speed adjustment.

Module gear wheel, pitch 1, 75 teeth, ideal for precision mechanical drives that require reliability and service life.

Module gear wheel, pitch 1,5, ideal for precision gear drives, ensures reliability and service life in light mechanical applications.

Module pinion, pitch 1,5, ideal for precision mechanical drives, ensures uniform meshing and service life over time.

Module pinion, pitch 2,5, ideal for robust mechanical drives, ensures reliability and service life even in more demanding applications.

Module pinion, pitch 3, ideal for robust, precision mechanical drives, ensures reliability and long service life even in heavy-duty conditions.

Module pinion, pitch 4, ideal for robust, precision mechanical drives, ensures reliability and long service life even in heavy-duty conditions.

Module pinion, pitch 5, ideal for robust mechanical drives, ensures reliability, service life and precision even in heavy-duty applications.

Module sprocket, pitch 2, ideal for medium-precision mechanical drives, ensures reliability and service life over time.

The perforated V-belt is a standard section V‑belt intended for customisable industrial and mechanical applications. Thanks to the regular holes along the back and the dedicated joints, the belt can be made to any length and is sold by the metre, so that it fits any plant or transmission system perfectly.

1" duplex plate wheel sprocket, ideal for medium drives that require the simultaneous rotation of two chains with reliability and service life.

1" simplex plate wheel sprocket, designed for medium drives that require the rotation of a single chain with reliability and service life.

1" triplex plate wheel sprocket, designed for medium drives that require the simultaneous rotation of three chains with reliability and service life.

1.1/2" simplex plate wheel sprocket, ideal for drives that require reliability, precision and a single-chain structure.

1/2" duplex plate wheel sprocket, designed for light drives that require the simultaneous rotation of two chains with reliability and service life.

Plate wheel sprocket 1/2" simplex, ideal for light drives that require the rotation of a single chain with reliability and durability.

Plate wheel sprocket 1/2" triplex, ideal for light drives that require the simultaneous rotation of three chains with reliability and durability.

Plate wheel sprocket 3/4" duplex, ideal for light drives that require the simultaneous rotation of two chains with reliability and durability.

Plate wheel sprocket 3/4" simplex, ideal for light drives that require the rotation of a single chain with reliability and durability.

3/4" simplex plate wheel sprocket, ideal for light drives that require reliability and the rotation of a single chain.

Plate wheel sprocket 3/4" triplex, ideal for light drives that require the simultaneous rotation of three chains with reliability and durability.

Plate wheel sprocket 3/8" duplex, ideal for light drives that require the simultaneous rotation of two chains with reliability and durability.

3/8" simplex plate wheel sprocket, ideal for very light drives that require the rotation of a single chain with reliability and service life.

5/8" duplex plate wheel sprocket, ideal for light or medium drives that require the simultaneous rotation of two chains with reliability and service life.

5/8" simplex plate wheel sprocket, ideal for light or medium drives that require the rotation of a single chain with reliability and service life.

5/8" triplex plate wheel sprocket, ideal for light or medium drives that require the simultaneous rotation of three chains with reliability and service life.

⚡ Sold by rib: make sure you add the number of ribs required to the quantity (e.g. Ribs = 4 - Quantity = 2 you will receive 2 belts of 4 ribs).
The Poly‑V belt, section J is a multi-rib belt designed to transmit power efficiently on grooved pulleys. It is flexible, compact and suitable for transmissions with several parallel ribs.

The pre-bored aluminium pulley dia. 60 mm, 2 grooves, section A is a lightweight and strong component, designed for double V-belt drives. The 19 mm bore is fitted with a keyway for the coupling key, allowing secure and immediate mounting on the shaft.
⚠️ Note: the photo is for illustrative purposes only; the actual product may differ slightly in appearance.