Which type of hoist is specifically designed for infrequent use?

Screw geared hoists are specifically designed for infrequent use due to their mechanical design and operational characteristics. They utilize a screw mechanism to lift and lower loads, which allows for a finer control of the load position compared to other types of hoists. This design is particularly advantageous in situations where precise positioning is critical, and that precision becomes more necessary in infrequent usage scenarios.

Infrequent use does not impose the same continuous operational stress that frequent use would; hence, the robustness and durability of the screw gearing are beneficial, as they can handle the occasional heavy lifting without significant risk of wear or failure. While other types of hoists like spur geared, pulleys, or differential hoists may be suitable for specific applications, they generally cater more towards continuous or frequent usage scenarios, making screw geared hoists uniquely suited for infrequent operations.