CLAIMS
1. A planetary wheel drive, comprising:
a stationary spindle and a rotatable housing;
an input stage and an output stage;
said input stage includes an input sun gear, an input planet gear, an input planet pin and an input planet carrier;
said input planet pin has a first portion, said first portion has a first diameter;
said input planet pin has a second portion, said second portion has a second diameter;
said first diameter of said input planet pin is larger than said second diameter of said input planet pin;
said first portion of said input planet pin is press fit into a respective bore of said input planet carrier;
said input planet gear includes a bore;
an input planet bushing, said input planet bushing includes a flange;
said input planet bushing includes a first side and a second side;
said input planet bushing includes a first side made of steel;
said input planet bushing includes a second side made of a steel backing and a first sliding layer;
said first side of said input planet bushing is affixed to said bore of said input planet gear; and,
said second side of said input planet bushing rotatable about said input planet pin;
said rotatable housing includes an internal ring gear;
said input planet gear meshes with said internal ring gear of said rotatable housing; and,
said input planet carrier drives said output planet stage
2. A planetary wheel drive as claimed in claim 1, further comprising:
said first sliding layer of said input planet bushing is impregnated with a lubricating agent.
3. A planetary wheel drive as claimed in claim 1 wherein said input planet bushing includes a cylindrically shaped portion.
4. A planetary wheel drive as claimed in claim 1, further comprising:
said output stage includes an output sun gear, an output planet gear, an output planet pin and an output planet carrier;
said output planet pin has a first portion, said first portion has a first diameter;
said output planet pin has a second portion, said second portion has a second diameter;

said first diameter of said output planet pin is larger than said second diameter of said output planet pin;
said first portion of said output planet pin is press fit into a respective bore of said output planet carrier;
said output planet gear includes a bore;
a first output planet bushing;
a second output planet bushing;
said first output planet bushing includes a flange;
said second output planet bushing includes a flange;
each of said first and second output planet bushings includes a first side and a second side;
each of said output planet bushings includes a first side made of steel;
each of said output planet bushings includes a second side made of a steel backing and a first sliding layer;
each of said first sides of said output planet bushings is affixed to said bore of said output planet gear; and,
each of said second sides of said output planet bushings rotatable about said output planet pin;
said output planet gear meshes with said internal ring gear of said rotatable housing; and,
said output planet carrier is fixed to said stationary spindle.
5. A planetary wheel drive as claimed in claim 1 wherein said first side of said input planet bushing is press fit into said bore of said input planet gear.
6. A planetary wheel drive as claimed in claim 4 wherein each of said first sides of said output planet bushings is press fit into said bore of said output planet gear.
7. A planetary wheel drive as claimed in claim 4, further comprising:
each of said first sliding layers of said output planet bushings are impregnated with a lubricating agent.
8. A planetary wheel drive as claimed in claim 7 wherein said lubricating agent is PTFE.
9. A planetary wheel drive as claimed in claim 2 wherein said lubricating agent is PTFE.

10. A planetary wheel drive as claimed in claim 1 wherein said flange of said input planet bushing separates said input planet gear from said input planet carrier.
11. A planetary wheel drive as claimed in claim 4 wherein said flange of said first output planet bushing separates said output planet gear from said output planet carrier.
12. A planetary wheel drive as claimed in claim 1, further comprising:

said flange of said input planet bushing, a thrust washer and a retainer affixed to said input planet pin restrains axial movement of said input planet gear and absorbs axial and tangential loads.
13. A planetary wheel drive as claimed in claim 4, further comprising:
said first output planet bushing and said second output planet bushing restrain axial movement of said output planet gear and absorbs axial and tangential loads.
14. A planetary wheel drive as claimed in claim 1, further comprising:
said bore of said input planet gear is turned to size and finished but not ground.
15. A planetary wheel drive as claimed in claim 4, further comprising:
said bore of said output planet gear is turned to size and finished but not ground.
16. A planetary wheel drive, comprising:
a stationary spindle and a rotatable output housing;
a first main bushing interposed between said stationary spindle and said rotatable output housing;
a second main bushing interposed between said stationary spindle and said rotatable output housing:
said first main bushing includes a first flange;
said second main bushing includes a second flange; and,
said first main bushing and said second main bushings are affixed to said rotatable housing.
17. A planetary wheel drive as claimed in claim 16, further comprising:
said first main bushing includes a first side made of steel;
said first main bushing includes a second side made of a steel backing and a sliding layer of PTFE, Polytetrafluoroethylene;
said second main bushing includes a first side made of steel; and,
said second main bushing includes a second side made of a steel backing and a sliding layer of PTFE, Polytetrafluoroethylene.
18. A planetary wheel drive as claimed in claim 16, further comprising:
said stationary spindle includes an exterior surface;
said stationary spindle includes an exterior shoulder in said exterior surface; said rotatable housing includes an internal surface;
said internal surface of said rotatable housing includes a first shoulder and a second shoulder; said first flange of said first main bushing affixed to said rotatable housing abuts said first shoulder of said internal surface of said rotatable housing;

said first flange of said first main bushing affixed to said rotatable housing abuts said exterior shoulder of said spindle;
said second flange of said second main bushing affixed to said rotatable housing abuts said second shoulder of said internal surface of said rotatable housing; and,
a retaining nut for securing said stationary spindle and said rotatable housing against axial separation.
19. A planetary wheel drive as claimed in claim 16 wherein said first main bushing and said second main bushing are press-fit onto said rotatable housing.
20. A planetary wheel drive as claimed in claim 17 wherein said first main bushing and said second main bushing are press-fit onto said rotatable housing.
21. A planetary wheel drive as claimed in claim 18 wherein said first main bushing and said second main bushing are press-fit onto said rotatable housing.
22. A planetary wheel drive as claimed in claim 17, further comprising:
said first main bushing includes a second side made of a steel backing and a first sliding layer of PTFE, Polytetrafluoroethylene;
said second main bushing includes a second side made of a steel backing and a second sliding layer of PTFE, Polytetrafluoroethylene; and,
said first sliding layer and said second sliding layer slidingly engage said stationary spindle.
23. A planetary wheel drive, comprising:
a stationary spindle, said stationary spindle includes an exterior surface;
said stationary spindle includes an exterior shoulder in said exterior surface;
a rotatable housing, said rotatable housing includes an internal surface;
said internal surface of said rotatable housing includes a first shoulder and a second shoulder;
said first main bushing includes a first flange affixed to said rotatable housing, said first flange of said first main bushing affixed to said rotatable housing abuts said first shoulder of said internal surface of said rotatable housing;
said first flange of said first main bushing affixed to said rotatable housing abuts said exterior shoulder of said exterior surface of said stationary spindle;
said second main bushing includes a second flange press-fit to said rotatable housing, said second flange of said second main bushing affixed to said rotatable housing abuts said first shoulder of said internal surface of said rotatable housing;

said second flange of said second main bushing pressOfit to said rotatable housing abuts said second shoulder of said internal surface of said rotatable housing; and,
a retaining nut for securing said stationary spindle and said rotatable housing against axial separation.
24. A planetary wheel drive as claimed in claim 16, further comprising:
said first main bushing includes a first side made of steel;
said first main bushing includes a second side made of a steel backing and a first sliding layer; said second main bushing includes a first side made of steel; and,
said second main bushing includes a second side made of a steel backing and a second sliding layer.
25. A planetary wheel drive as claimed in claim 24, further comprising:
said first and second sliding layers are impregnated with a lubricating agent.