Coupling assembly for a machine

1. A coupling assembly for a machine, the coupling assembly comprising:

a pin comprising a first pin passageway for a lubricant extending between a first pin passageway inlet and a first pin passageway outlet for directing the lubricant outside of the pin; and

a distribution device for distributing the lubricant, the distribution device comprising a distribution device inlet for receiving the lubricant and a distribution device outlet,

wherein the distribution device is mounted to the pin and the distribution device outlet is arranged to direct lubricant into the first pin passageway inlet, and

wherein the pin further comprises a second pin passageway extending between a second pin passageway inlet and a second pin passageway outlet,

the second pin passageway outlet being positioned in fluid communication with the distribution device inlet for directing the lubricant into the distribution device inlet, and

the second pin passageway inlet being positioned in fluid communication with a lubrication delivery system for receiving the lubricant from the lubrication delivery system.

2. The coupling assembly according to claim 1 , wherein the distribution device is integrated inside the pin.

3. The coupling assembly according to claim 1 , wherein the distribution device receives lubricant from the distribution device inlet, and distributes a predetermined quantity of lubricant to the distribution device outlet.

4. The coupling assembly according to claim 1 , wherein the pin further comprises a third pin passageway extending between a third pin passageway inlet and a third pin passageway outlet,

the distribution device includes a plurality of distribution device outlets including a first distribution device outlet and a second distribution device outlet, the distribution device outlet being the first distribution device outlet, and

wherein the first distribution device outlet is arranged to direct lubricant into the first pin passageway inlet and the second distribution device outlet is arranged to direct lubricant into the third pin passageway inlet.

5. The coupling assembly according to claim 4 , wherein the distribution device is configured to distribute a first predetermined quantity of lubricant to the first distribution device outlet, and a second predetermined quantity of lubricant to the second distribution device outlet.

6. The coupling assembly according to claim 1 , wherein the first pin passageway inlet is located at an end of the pin.

7. The coupling assembly according to claim 1 , further comprising one or more bearing housings in which the pin is rotatably mounted.

8. The coupling assembly according to claim 7 ,

wherein the one or more bearing housings comprises at least one housing input passageway arranged for communicating lubricant from the lubrication delivery system to the second pin passageway inlet.

9. The coupling assembly according to claim 8 , wherein the pin further comprises a third pin passageway extending between a third pin passageway inlet and a third pin passageway outlet, and

wherein the one or more bearing housings comprises at least one housing outlet passageway arranged for communicating lubricant from the third pin passageway outlet to the lubrication delivery system.

10. The coupling assembly according to claim 9 , wherein the one or more bearing housings comprises external grooves arranged for communicating lubricant between the lubrication delivery system and the at least one housing inlet passageway and/or the at least one housing outlet passageway.

11. The coupling assembly according to claim 9 , wherein the one or more bearing housings comprises:

a first internal seal for sealing lubricant communicated between the at least one housing input passageway and the second pin passageway inlet; and

a second internal seal for sealing lubricant communicated between the third pin passageway outlet and the at least one housing input passageway.

12. The coupling assembly according to claim 9 , wherein the one or more bearing housings comprises internal grooves for distributing lubricant received from the first pin passageway outlet to between the pin and the one or more bearing housings.

13. The coupling assembly according to claim 1 , wherein the distribution device is located outside the pin.

14. The coupling assembly according to claim 1 , wherein the pin includes an outer surface that extends from a first end of the pin to a second end of the pin, and the first pin passageway inlet is located at the outer surface of the pin.

15. The coupling assembly according to claim 1 , wherein the distribution device includes a plurality of distribution device outlets, and the distribution device outlet is a first distribution device outlet of the plurality of distribution device outlets.

16. The coupling assembly according to claim 15 , wherein the distribution device is configured to

operate as a single-line series progressive distributor, and

deliver a predetermined quantity of lubricant to each distribution device outlet of the plurality of distribution device outlets.

17. A machine comprising:

a coupling assembly including

a pin comprising a first pin passageway extending between a first pin passageway inlet for receiving a lubricant, and a first pin passageway outlet for directing the lubricant outside of the pin, and

a distribution device for distributing the lubricant, the distribution device comprising a distribution device inlet for receiving the lubricant and a distribution device outlet for discharging the lubricant,

wherein the distribution device is mounted to the pin and the distribution device outlet is arranged to direct lubricant into the first pin passageway inlet;

a first component;

a second component rotatable relative to the first component about the pin; and

a lubrication delivery system for delivering the lubricant to the coupling assembly and/or receiving the lubricant from the coupling assembly,

wherein the distribution device is configured to

operate as a single-line series progressive distributor, and

deliver a predetermined quantity of lubricant to each distribution device outlet of the plurality of distribution device outlets.

18. A method for lubricating a coupling assembly of a machine, the coupling assembly comprising a distribution device mounted to a pin, the pin defining a first pin passageway and a second pin passageway, the method comprising:

receiving a lubricant at a first pin passageway inlet of the first pin passageway from a lubrication delivery system;

directing the lubricant through the first pin passageway to a first pin passageway outlet;

directing the lubricant from the first pin passageway outlet into the distribution device via a distribution device inlet;

directing the lubricant through a distribution device outlet of the distribution device;

directing the lubricant from the distribution device outlet to the pin through a second pin passageway inlet, along the second pin passageway, and to a second pin passageway outlet; and

directing lubricant outside of the pin via the second pin passageway outlet.