The is a high-performance analog micro servo widely recognized in the RC (Remote Control) and robotics communities for its durability and precision . As the upgraded metal-gear successor to the popular ES08A series, it is engineered to handle higher stress levels and impacts, making it a "go-to" component for 450-class helicopters, 1/24 scale crawlers like the Axial SCX24 , and small robotic projects. Core Specifications
Keep in mind that these specs might not be comprehensive or up-to-date. If you need accurate and detailed information, I recommend finding the official datasheet.
The most defining specification on the datasheet is the construction material: . Unlike its predecessor (the ES08A) or competitors that use nylon or POM (polyoxymethylene) plastic, the ES08MA II lists a full set of metal geartrain components. This single line item has profound implications. Metal gears drastically increase the servo’s resistance to shock loads and tooth stripping, extending the operational lifespan in applications like robotic arms or off-road RC vehicles. The datasheet notes the output gear is supported by a ball bearing, while the second gear rides on a bronze bushing—a hybrid arrangement that reduces shaft play (backlash) while keeping manufacturing costs moderate. emax es08ma ii datasheet
No report is complete without looking at how things break. The ES08MA II has two distinct behaviors when pushed beyond datasheet limits:
A crucial point of confusion in the datasheet lineage is the variant (Metal Gear). The "MA" specifically denotes the plastic gear version. The "MD" version offers higher torque (2.0 kg-cm) but weighs slightly more. The choice between MA and MD is usually a choice between Speed vs. Durability . The is a high-performance analog micro servo widely
Critically, the datasheet lists an of -10°C to +60°C (14°F to 140°F). The metal case (the top shell is aluminum alloy) acts as a heat sink for the internal DC motor and control IC. Users pushing the servo near its stall torque must observe this limit; above 60°C, the epoxy on the motor windings can degrade, and the feedback potentiometer’s wiper may wear non-linearly.
In the realm of small-scale robotics, RC (radio-controlled) hobbyists, and lightweight mechatronics, the servomotor is an indispensable actuator. Among the myriad of options, the Emax ES08MA II stands out as a benchmark for value engineering, balancing torque, speed, and physical durability. A thorough examination of its datasheet reveals not just a list of numbers, but a profile of a component designed for reliability under repetitive, high-load conditions where plastic-geared servos typically fail. If you need accurate and detailed information, I
It is widely regarded as the "gold standard" for small RC planes and walkers due to its unique balance of speed, torque, and durability. This report dissects the datasheet to understand why this specific component remains a top contender in a saturated market.