SIT

SIT Couplings

TRASCO® flexible Couplings

Metal hubs (cast iron, steel, aluminium alloy)
Polyurethane spider
In “flexible couplings” range it has got best "transmissible power/dimension" ratio

Couplings can be supplied according to ATEX DIRECTIVE 94/9/CE. "Equipment and protective systems, which may be used in areas endangered by potentially explosive atmospheres".

SITEX®

Hubs in steel or Nylon 6.6
Sleeve in stabilized 6.6 super polyamide resin

Couplings can be supplied according to ATEX DIRECTIVE 94/9/CE. "Equipment and protective systems, which may be used in areas endangered by potentially explosive atmospheres".

SITEX® ST Couplings

SITEX® ST couplings are fully manufactured in high quality steel. They are made of 1 or 2 geared hubs which are coupled with one sleeve through which the torque is transmitted. The special OPTIGEAR profile, allows very high torque transmission and the compensation of axial, angular and radial misalignment (only in the version with 2 hubs). The maximum recommended working temperature is -10 °C a + 80 °C. For application with special needs special materials should be used. Please ask our technical department.

Features:

• OPTIGEAR profile
• Interchangeability
• The most compact solution
• Special executions
• Corrosion protection

JUBOFLEX®

JUBOFLEX® couplings are made of:

• one elastic element made of pre compressed natural rubber reinforced with steel, to be fitted with fixing screws and with a metallic band (to be removed after mounting);
• two metallic hubs made of forged steel (size 120 produced in cast iron).

They are produced:

• for mounting with SER-SIT® taper bush from size 4 to 25;
• solid hub from size 35 to 120.

Couplings can be supplied according to ATEX DIRECTIVE 94/9/CE. "Equipment and protective systems, which may be used in areas endangered by potentially explosive atmospheres".

SITEX® FL

SITEX® FL gear coupling, made of a steel hub and a Nylon flange fibreglass reinforced, with high mechanical resistance and dimensional stability at different operating temperatures.

SITEX® FL gear coupling is typically used to connect the engine flywheel to different “end users” such as hydraulic pumps, blade and piston air compressors.

Couplings can be supplied according to ATEX DIRECTIVE 94/9/CE. "Equipment and protective systems, which may be used in areas endangered by potentially explosive atmospheres".

TRASCO® ES “Zero-Backlash” flexible coupling

Metal hubs (steel, aluminium alloy)
Flexible spider in polyurethane special compound

Advantages:

• Backlash free motion drive
• Vibration dumping
• Low thermical and electrical conductivity
• Easy and quick mounting
• Functional at use
• Perfect balancing (“A” and “AP” versions)
• Very low inertia
• Couplings can be supplied according to ATEX DIRECTIVE 94/9/CE.

"Equipment and protective systems, which may be used in areas endangered by potentially explosive atmospheres".

SERVOPLUS® Couplings

SERVOPLUS® bellow couplings are the perfect coupling in all servo motor applications where high torsional rigidity, truly backlash free torque transmission, low inertia and superior reliability are required. The innovative modular system allows quick delivery and competitive cost advantage.

Features:

• backlash free for highest torque transmission precision
• low moment of inertia
• excellent dynamic characteristics, for superior drives at high speed and torque inversions
• allow for axial, radial and angular misalignment
• easy mounting
• high torsional rigidity
• wear and maintenance free
• working temperature up to 300 °C
• innovative modular execution
• The innovative modular system allows competitive costs and very quick delivery for any shaft combination. Additional benefits include bellow replacement without moving shaft.

METALDRIVE® Disc couplings

METALDRIVE® couplings are fully made of steel and are used in all applications where high reliability, precision and no maintenance are required.

Features:

• All steel made
• Superior disc pack profile and assembly optimized for higher torque and misalignment and lower restoring forces
• Maintenance, lubrication and wear free
• Backlash free and torsionally rigid
• Wide range of temperature allowed: -40°C a 250°C
• Available in execution conforming to ATEX 94/9/CE
• Easy installation
• Bidirectional
• Modular design
• Allow axial, angular and radial misalignment (only with double disc pack)
• Available in stainless steel for corrosive environment application

Bolt coupling

The bolt coupling is a rigid coupling. It is made of two halves, wich are cast iron grade GG25 connected by mean of bolts. It is maintenance and lubrication free. Moreover, its construction prevents fretting corrosion and allows for easy mounting and dismounting.

The bolt coupling is designed to connect horizontal shafts with similar diameters. In case of different application, contact our technical department. The indicated torque values refer to couplings without keyways.

To transmit higher torques it is possible to machine keyways by following DIN 6885/1. The values of the torque have been calculated with a coefficient of friction equal to 0,15 and with a screw tightening torque according to the indicated value (DIN 912 - 8.8).