Bonfiglioli CAFS Reducer Selection and Application Guide

Rn Just enough.

Non midpoint loading: If the distance between the load application point and the shoulder of the axis is xx， It is necessary to convert the allowable radial force. Taking the output shaft as an example, the converted allowable radial force

Rx two=Rn two×ab+x R x2=R n2× b+xa

Among them, a and b are constants corresponding to different machine base numbers. only in

Rc two≤Rx two

R c2≤R x2

It is considered safe only under certain conditions.

In addition, axial thrust loads are usually checked at 20% of the coaxial radial force. If there is no radial force, the pure axial force that the bearing can withstand can reach 50% of the rated radial force.

Lubrication Strategy: Selection of PAO, PAG, and Mineral Oil

The classification of lubricating oil in the manual is of great practical guidance significance:

Life Lubricated: For small machine base sizes (such as C05-C41), synthetic oil has been added at the factory and does not require regular replacement.

Mineral Oil restriction: only applicable in service factor

fs≥one point three zero f s Mineral oil is allowed to be used when ≥ 1.30, as synthetic oil (PAO/PAG) can provide a more stable oil film and higher thermal oxidation stability under high loads.

The exclusivity of PAG (polyethylene glycol) oil: The manual clearly states that the A series (spiral bevel gear) A05-A60 machine base must use PAG oil (recommended viscosity 320) forcibly, because PAG oil has extremely high extreme pressure and anti-wear properties, which can effectively cope with the huge contact stress generated in spiral bevel gear transmission.

Special working condition application: derating treatment of ATEX explosion-proof configuration

When using A-series explosion-proof reducers in explosive environments, in addition to following the standard selection process, additional mechanical and thermal derating treatment is required, and explosion-proof dedicated Fluoro elastomers and breathing valves must be used.

Mechanical derating (ATEX specific service factor):

For the configuration of standard IEC interfaces, it is required that the service factor of the entire transmission chain must be≥one point four≥ 1.4.

For direct input configurations, it is necessary to multiply the rated torque by 1400 min ⁻¹fATEX=one point two fivef ATEX=1.25. For machine base numbers within a specific speed ratio range,

fATEX Need to be raised to 1.4.

ATEX thermal power calculation（Pt）：

The calculation formula is extended to:

Pt=PtB×fTa×fratio×fPOS×fINT×fAIR

Pt BP tB Basic thermal power (table value).

fTa Environmental temperature factor (1.0 at 40 ° C, reduced to 0.76 at 60 ° C).

fPOS Installation location factor (B3/B8 is 1, V-shaped installation is 0.8).

Installation and maintenance: Avoid "last mile" failure

Shaft end installation fit: When the output shaft of the reducer is cylindrical, the inner hole of the fitting should be machined to ISO H7 tolerance. Interference fit will damage the bearing clearance and cause bearing sintering.

Servo Adapter: When adapting a servo motor or using a clamping mechanism (SC code), it is necessary to ensure that the keyway on the motor shaft is aligned with the slot of the clamping device, and if the motor shaft has a key, the key must be removed. The torque for tightening the locking screw must strictly refer to the torque value given in the manual drawing.

Storage requirements: Long term storage (>6 months) must be equipped with SLM (mineral oil compatible) or SLP (polyethylene glycol oil compatible) anti-corrosion options. The equipment should be placed on a wooden support to avoid direct grounding, and the input shaft should be rotated regularly to prevent bearing adhesion.