- Joined
- Feb 2, 2013
- Messages
- 3,628
Hi All,
i had a project that came into the shop.
I have fixed this type of machine many times before, a Biro BCC100 Chicken Portioning Slicer.
it's basically a 3/4 hp 56 frame 115v single phase 1750 rpm motor with a 8" stainless steel blade attached to the motor for dismembering chicken and sometimes i've seen the machine used equally well for fish.
it will literally cut a chicken into it's major parts in seconds with a skilled operator, no knife is needed- the machine is a really cool rotary knife!
The little machines Achilles' heel is that the motor specifications were incorrect for the job, in my opinion.
there is no provision for drive shaft sealing. the machine is washed down daily after production and the soaps that they use accelerate bearing decay and ultimately cause bearing failure after a year or so.
I replaced the bearings about 9 months ago in this particular machine, but this store gets a lot more volume than stores in the region and subsequently has a shorter service interval.
i felt that there should be a seal on the shaft, if for nothing else, to give a few extra months of up-time.
here's the photographic evidence...
the seal pictured mid picture, left is a single lip .625" id x 1.125" od x .250" thick.
the end cap is only relieved for the driveshaft , the bore being .6875",
it will need to be punched out to 1.120" to fit the seal with a lot of interference fit.
I chucked the endcap up in the Hercus 9x22 and punched it out.
the bore ended to be 1.121" id, excellent for a .004" interference fit!
the bearing size for most 56 frame motors with a 5/8" shaft is 6203zz- C3.
i replaced both front and rear bearings prior to reassembly.
i inverted the seal to keep water from entering the motor.
i polished the motor shaft and lubed the seal and shaft with my favorite synthetic Mobil 1 grease and reassembled the motor.
i gave the motor and seal a quick shot of paint to minimize corrosion
i reassembled the rest of the machine and gave a test..
the motor works flawlessly and now has an added layer of protection for the motor bearing nearest the drive end against overspray.
the motor's service life will be extended, for a lot longer this time
as always thanks for reading,
i hope this inspires others to make lemonade from lemons...
i had a project that came into the shop.
I have fixed this type of machine many times before, a Biro BCC100 Chicken Portioning Slicer.
it's basically a 3/4 hp 56 frame 115v single phase 1750 rpm motor with a 8" stainless steel blade attached to the motor for dismembering chicken and sometimes i've seen the machine used equally well for fish.
it will literally cut a chicken into it's major parts in seconds with a skilled operator, no knife is needed- the machine is a really cool rotary knife!
The little machines Achilles' heel is that the motor specifications were incorrect for the job, in my opinion.
there is no provision for drive shaft sealing. the machine is washed down daily after production and the soaps that they use accelerate bearing decay and ultimately cause bearing failure after a year or so.
I replaced the bearings about 9 months ago in this particular machine, but this store gets a lot more volume than stores in the region and subsequently has a shorter service interval.
i felt that there should be a seal on the shaft, if for nothing else, to give a few extra months of up-time.
here's the photographic evidence...
the seal pictured mid picture, left is a single lip .625" id x 1.125" od x .250" thick.
the end cap is only relieved for the driveshaft , the bore being .6875",
it will need to be punched out to 1.120" to fit the seal with a lot of interference fit.
I chucked the endcap up in the Hercus 9x22 and punched it out.
the bore ended to be 1.121" id, excellent for a .004" interference fit!
the bearing size for most 56 frame motors with a 5/8" shaft is 6203zz- C3.
i replaced both front and rear bearings prior to reassembly.
i inverted the seal to keep water from entering the motor.
i polished the motor shaft and lubed the seal and shaft with my favorite synthetic Mobil 1 grease and reassembled the motor.
i gave the motor and seal a quick shot of paint to minimize corrosion
i reassembled the rest of the machine and gave a test..
the motor works flawlessly and now has an added layer of protection for the motor bearing nearest the drive end against overspray.
the motor's service life will be extended, for a lot longer this time
as always thanks for reading,
i hope this inspires others to make lemonade from lemons...
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