Bonfiglioli TR 080 2 20 STD 70B1 CD 16 S1 OR SB KE Planetary Gearbox

The Bonfiglioli TR 080 2 20 STD 70B1 CD 16 S1 OR SB KE Planetary Gearbox is a mechanical reducer intended for compatible industrial drive systems. It is identified by the TR 080 frame size, the 2 20 stage and ratio reference, the STD designation, the 70B1 motor interface, the CD configuration reference, the 16 shaft reference, and the S1 OR SB KE suffix, together with the reference TRC2020S003.

The TR series is associated with planetary gearboxes used where compact construction, high torque density, and good torsional stiffness are required. Because the reference string contains several coded values, the project drawing and the unit documentation should be used together when the gearbox is installed or replaced.

Reading the Reference in Order

The TR 080 value identifies the frame size and the approximate torque class. The 2 20 values describe the stage count and the ratio reference. The STD designation indicates a standard configuration. The 70B1 value defines an IEC 70 motor interface with a B1 flange arrangement. The CD and 16 values describe configuration and shaft details, and the suffix describes further options.

Each of these values affects whether the gearbox fits the machine. A unit with the same frame size but a different shaft reference or a different motor interface may not be interchangeable, even if the mounting holes appear to match.

Mechanical Function

The gearbox transfers torque between the input and output shafts through its planetary stages. It reduces the input speed and increases the output torque according to the ratio defined by the configuration. The user should confirm the output speed, the output torque, and the permissible radial and axial loads against the machine requirement.

The gearbox should not be exposed to loads beyond its specified capacity. Shock loads, misalignment, and excessive overhung loads can affect bearings, gears, and seals. The machine design should provide adequate support for the gearbox and for the connected shafts.

Motor Interface and Coupling

The 70B1 interface should be matched to the motor flange and shaft. Where a coupling is used between the motor and the gearbox, the coupling should be aligned within the limits allowed by the design. Where the motor shaft engages directly with a clamping hub or a keyed bore, the fit should be checked before assembly.

Impact on the shafts during assembly should be avoided. The gearbox should be supported during fitting so that its weight does not load the motor bearing or the gearbox bearing.

Mounting and Alignment

The gearbox should be mounted on a rigid structure that can support the torque and load. The mounting surface should be clean and flat. Fasteners should be tightened to the specified values. The gearbox should not be distorted by uneven surfaces or excessive bolt force, because distortion can affect gear alignment and seal performance.

Shaft alignment to the driven machine should be checked carefully. Couplings should be aligned within the limits allowed by the coupling and gearbox design. Guards should be fitted where rotating parts are accessible.

Lubrication and Sealing

Lubrication is essential for reliable gear operation. The correct lubricant type and quantity depend on the gearbox size, the mounting position, and the operating conditions. The user should follow the product documentation for lubricant selection and service intervals.

Seals protect the lubricant and exclude contamination. During inspection, the user should check for leakage around shafts and joints. Oil stains may indicate seal wear or loose connections. The breather and fill points should be kept clean.

Thermal Behaviour

Planetary gearboxes generate heat at the gear mesh, and the thermal capacity depends on the housing surface, the mounting position, and the ambient conditions. Good airflow around the housing supports stable operation. Where the gearbox is mounted inside an enclosure, the internal temperature should be considered in the design.

If the application includes high duty cycles or high ambient temperature, the thermal capacity should be reviewed before the machine is placed into continuous service.

Commissioning

Commissioning should begin with a mechanical inspection. Mounting bolts, couplings, and guards should be checked, and the lubricant level should be confirmed. The gearbox should be run at low load where possible to observe noise, vibration, and leakage. The direction of rotation should be confirmed.

Commissioning records should include the full reference, the ratio, the motor interface, the mounting position, and the test results.

Diagnostics and Maintenance

If the gearbox runs noisily, the user should check alignment, mounting, lubrication, and load conditions. Vibration may come from the coupling, the driven machine, or the gearbox itself, and the source should be identified before parts are replaced. If the gearbox overheats, the load, duty cycle, ambient temperature, and lubrication should be reviewed.

Routine maintenance should include checking for leakage, noise, vibration, and loose fasteners. The lubricant should be inspected and changed according to the service plan. Maintenance work should be performed with the machine isolated and secured.

Application Value

The TR 080 planetary gearbox supports speed reduction and torque transmission in compatible machinery. It can be applied in positioning, conveyor, packaging, and other industrial drive arrangements where a compact planetary solution fits the design.

Summary

The Bonfiglioli TR 080 2 20 STD 70B1 CD 16 S1 OR SB KE Planetary Gearbox is intended for compatible mechanical power transmission. Correct reference verification, mounting, alignment, lubrication, commissioning, and maintenance are essential.