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FANUC Alpha Series A290-7031-X494

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A290-7031-X494

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The FANUC A290-7031-X494 is a precision-engineered shaft rear gear assembly, specifically designed for the Alpha Series robots, including models S-400, S-410, and S-480. This component features helical-cut teeth with a pitch module of 2 mm, ensuring smooth operation at a maximum safe rotational speed of 6,000 rpm.

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Technical specifications for A290-7031-X494

ManufacturerFANUC
Product TypeShaft rear-gear assembly
Product LineAlpha Series
Part NumberA290-7031-X494
Compatible robotsS-400, S-410 & S-480 lines
Gear formHelical-cut teeth
Module (pitch)2 mm (metric)
Pressure angle20° standard profile
Backlash≈ 0.04 × module
Hardness (case)58–62 HRC flank hardness
Tolerance gradeDIN 6 accuracy
Max rotation6 000 rpm safe speed
Operating temperature0 °C to 45 °C
LubricantSynthetic gear oil pre-filled
BearingsDeep-groove ball type
Surface finishRa 0.2–0.8 µm
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The A290-7031-X494 from FANUC is a shaft rear-gear assembly crafted to enhance performance in robotic applications. It is compatible with S-400, S-410, and S-480 series robots within the Alpha Series. The gear assembly is designed with helical-cut teeth, which allows for effective transfer of power and reduces noise during operation.

With a pitch module of 2 mm, this assembly maintains a standard pressure angle of 20°, facilitating consistent engagement across the gears. Backlash, a critical factor in mechanical precision, is approximately 0.04 times the module, ensuring tight tolerances that align with the DIN 6 accuracy standard.

Engineered to withstand conditions within a temperature range of 0 °C to 45 °C, the unit is pre-filled with synthetic gear oil to reduce friction and wear. It operates safely at maximum speeds of 6,000 rpm, making it suitable for high-performance settings.

The component features deep-groove ball bearings, which support smooth rotational motion and enhance durability. Additionally, the case hardness achieves between 58–62 HRC, providing strength to withstand operational stresses. The surface finish varies between Ra 0.2 to 0.8 µm, creating an optimal contact surface that further augments long-term reliability.