A speed reduction apparatus includes a motor and a speed reduction assembly. The motor includes a first rotating shaft and a second rotating shaft a second rotator and a first rotator, a stator, a first motor housing, a second motor, and a first bearing and a second bearing at a radial outer side of the first rotating shaft, the first bearing and the second bearing being axially located at the same side of the first rotator facing the first motor housing. The speed reduction assembly includes a first gear, third gears engaging with the first gear, and a second gear, an output shaft, the third gears turning the second gear to rotate, and the second gear driving the output shaft, and a bracket between the output shaft and the first rotating shaft, the first gear, the second gear and the third gears being located at an axial outer side of the first motor housing, and at least one of the first gear, the second gear and the third gears being located radial outer sides of the first bearing and the second bearing.

A regulating flap reduction gear for an electrically driven regulating flap for regulating a gas or liquid volume flow includes two parallel bearing plates between which gear parts are rotatably arranged. A plurality of spacers keep the two bearing plates at a distance from one another. The plurality of spacers are designed as tabs of one, first bearing plate, which are bent by 90° from the plane of the first bearing plate and have at least one lateral projection. The tabs are inserted with their free tab ends into plug-in openings of the other second bearing plate until their at least one lateral projection rests against the second bearing plate.

A housing for a plastic gearbox and associated plastic gearbox and a robot. The housing includes a body including an inner engaging portion circumferentially arranged on an inner surface of the body, the inner engaging portion adapted to be engaged with a transmission assembly of the plastic gearbox; and an adjusting mechanism arranged around the body and operable to squeeze the body inwardly to reduce an inner diameter of the body. By using the adjusting mechanism to squeeze the body of the housing inwardly, the fit error between the inner engaging portion and the transmission assembly can be compensated in an efficient way. Furthermore, the adjusting mechanism is a part of the housing and thus the body of the housing which is made of plastic does not need to be too thick, which makes injection molding easier and manufacturing precision improved.

The present disclosure provides a transmission assembly and a garden tool. The transmission assembly is configured to connect a drive assembly and a garden work assembly. The transmission assembly comprises a casing and a first transmission component and a second transmission component accommodated in the casing; the first transmission component and the second transmission component are engaged with each other; the first transmission component comprises a first gear and a second gear engaged with each other; a gear shaft of the first gear is disposed at an angle with respect to a gear shaft of the second gear; and the second transmission component comprises a third gear able to rotate coaxially with the second gear and a fourth gear engaged with the third gear. With two levels of transmission components provided in the transmission assembly of the present disclosure, the output power of the garden tool can be controlled effectively, and the cost for using and producing the garden tool of the present disclosure are reduced while ensuring that the garden tool can be used normally.

A shaft retention mechanism of the present invention includes: a casing forming a housing space containing a lubricant; an input shaft penetrating a through-hole formed in the casing, the input shaft extending through the casing; a sealing ring encircling the input shaft in the through-hole, the sealing ring sealing between the input shaft and the casing; and a bearing disposed on an opposite side of the sealing ring to the housing space, the bearing rotatably supporting the input shaft in the through-hole.

A motion control apparatus in the form of a sealed rotary table (10) includes a first annular seal (54) located between a bearing cap (48) of a case and an inner diameter of a cylindrical flange (60), and a second annular seal (56) located between a seal ledge (22) of an annular wall (18) of the case and the outer diameter of the cylindrical flange (60). An enclosure (24), the annular wall (18) and a planar annular disc (16) are integrally formed as a single piece part of homogenous material. A drive station (12) includes a rotor (110) rotatably mounted inside an annular sleeve (118) by a bearing (140) inside an annular end cap (136) at an axial extent less than that of the annular sleeve (118). An encoder (150) is located within the annular end cap (136) and within the axial extent of the annular sleeve (118).

A motor reducer of the at least an embodiment of the present invention includes a reduction gear train that decelerates rotation input from a motor, and a reducer casing that accommodates the reduction gear train. An input cover that seals a motor-side end face of the reducer casing is provided, and the input cover is provided separately from the motor casing.

A speed reducing device includes a motor and a speed reducing mechanism. The speed reducing mechanism includes at least one roller assembly, a cycloid disc, at least one fixing disc and a positioning assembly. The roller assembly is disposed within a rotor portion of the motor. While the roller assembly is rotated with the rotor portion, the roller assembly is eccentrically revolved. The roller assembly includes a wheel disc and at least one roller. The cycloid disc includes a main body and at least one cycloid tooth structure. The cycloid tooth structure is protruded from an outer periphery of the main body and in contact with the corresponding roller. While the roller assembly is eccentrically revolved, the at least one cycloid tooth structure is pushed against the corresponding roller, so that the cycloid disc is correspondingly rotated.

A geared motor includes a gear unit having a first intermediate shaft, an input shaft and an output shaft. The gear unit has two connection surfaces set apart from each other to which a device to be driven by the gear unit is connectable to the gear unit, each connection surface having a drilling pattern. The housing part is asymmetrical such that the plane whose normal direction is aligned in parallel with the axis of rotation of the first intermediate shaft and includes the axis of rotation of the input shaft, is no plane of symmetry in relation to the entire outer surface of the housing part and also no plane of symmetry in relation to the housing wall of the housing part. The plane is a plane of symmetry with regard to the two connection surfaces together with their drilling patterns.

A gearbox may include a gearbox case with a wear sleeve disposed within a shaft bore, and a gear assembly mounted on a shaft and disposed within the shaft bore. The gear assembly may include a bearing that engages the wear sleeve. A method of repairing a gearbox case may include uncoupling a top piece and a bottom piece of the gearbox case, forming an oversize bore in a shaft bore of the gearbox case to remove a damaged area, and installing a wear sleeve in the oversize bore.