Excavators are one of the most common types of construction machinery in people's eyes. As large construction equipment with a body and chassis that can rotate relatively infinitely, they also require the support of slip rings. The most common slip ring on excavators is the pneumatic hydraulic slip ring, which is mounted onthe chassis and often used in conjunction with the excavator's hydraulic plunger pump to transmit high-pressure hydraulic fluid during rotational operations. In order to transmit hydraulic oil at higher pressures, these pneumatic hydraulic slip rings are generally made of stainless steel to ensure strength. Depending on the power or tonnage, the size of the gas and liquid passages in these slip rings may vary slightly.
JINPAT, as a professional slip ring manufacturer, has an experienced team specializing in the design of slip rings for engineering machinery and is capable of developing pneumatic hydraulic slip rings for excavators. For excavators, pneumatic hydraulic slip rings can be installed not only on excavators but also in other places. This is limited to some special excavator variant products that replace the digging bucket with other functional equipment, such as clamshell grabs and some special-purpose machinery with fully rotating chassis. These machines,with chassis and bodies capable of relative rotation, almost always feature hydraulic plunger pumps and pneumatic hydraulic slip rings.
Since modern excavators are hydraulic-driven, pneumatic hydraulic slip rings capable of withstanding high pressure are used to solve the problem of high-pressure oil transmission. In some models of excavators from certain manufacturers, electricslip rings are also installed on the chassis, although these electric sliprings are generally only found on small or mini excavators. JINPAT has developed various models of electric slip rings for such small excavators,incorporating anti-vibration structural design internally and using materials for the outer casing that are similar to those of pneumatic hydraulic sliprings, typically high-strength steel. In addition to the above cases, JINPAT has also developed pneumatic hydraulic electric integrated slip rings for these types of machinery.
With increasingly stringent global emission regulations, the trend toward electrification is bound to sweep through the field of engineering machinery.In this trend, in addition to pneumatic hydraulic slip rings for transmitting hydraulic oil, pneumatic hydraulic electric integrated slip rings and high-current integrated slip rings may also gain certain market share. Some manufacturers may choose to use external power sources instead of diesel engines to drive equipment on excavators. This approach involves integrating an armored cable reel into the engineering machinery, with the slip ring serving as a component integrated within the reel to support the transmission of current during the motion of the engineering machinery.