Compact impact tool

A power tool comprising:

• a housing having a motor housing portion and a handle portion extending from the motor housing portion, wherein the motor housing portion and the handle portion are defined by cooperating first and second clamshell halves coupled together along a parting plane;
• a motor supported within the moto housing portion and including an output shaft, the output shaft defining an axis;
• a gear assembly supported within the housing and operably coupled to the motor, the gear assembly including a ring gear directly supported by the first and second clamshell halves, a pinion gear coupled for co-rotation with the output shaft, and a plurality of planet gears meshed with the pinion gear and the ring gear;
• and
• a drive assembly operably coupled to the gear assembly, the drive assembly including a camshaft, an anvil, a hammer configured to reciprocate along the camshaft to impart rotational impacts to the anvil in response to rotation of the camshaft, and a spring biasing the hammer towards the anvil,
• wherein the ring gear includes a plurality of lugs engaged with the first and second clamshell halves to rotationally constrain the ring gear, and wherein the plurality of lugs is arranged such that all resultant force vectors on the first and second clamshell halves due to torque on the ring gear are oriented at an angle between 0 degrees and 45 degrees relative to the parting plane.

A power tool comprising:

• a housing having a first housing portion and a second housing portion coupled to the first housing portion;
• a motor directly mounted within the housing between the first and second housing portions and including an output shaft, the output shaft defining an axis;
• a gear assembly supported within the housing and operably coupled to the motor, the gear assembly including a ring gear and a pinion gear coupled to the output shaft;
• and
• a drive assembly operably coupled to the gear assembly, the drive assembly including a camshaft, an anvil, and a hammer configured to reciprocate along the camshaft to impart rotational impacts to the anvil in response to rotation of the camshaft, wherein the camshaft includes a bore through which an extension of the pinion gear extends;
• and
• a pinion seal supported on the pinion gear, the pinion seal including a flange configured to seal at least one selected from a group consisting of:
• a first interface between the pinion gear and the camshaft, and a second interface between the camshaft and the ring gear.