Looks like a 1.75" ID bearing, but you would need to measure the OD, and the width of the bearing,
Good news — I can give you some solid information about the bearing you need for the Harley Rake M6H based on the parts diagram and genuine OEM listings: �
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What the OEM Part Number M6574 Actually Is
The part number M6574 is the complete bearing assembly (bearing plus housing) used on the chain-drive side of the Harley Power Rake. It’s listed specifically in the parts list for M-series rakes as:
M6574 – 1-3/4″ Cylindrical Bearing Assembly — includes the bearing and the housing. �
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This assembly corresponds to the shaft support on the chain (drive) side.
Bearing Details
While the exact OEM internal bearing code (e.g., 6205, NU206, etc.) isn’t published, we can extract the dimensional info from the OEM listings:
Bore (inner diameter): 1.75 inches (≈ 44.45 mm)
The assembly includes bearing insert and housing, so that bore size is what the bearing is sized for inside. �
Ford Distributing
From typical industrial bearings:
Dimension
Approx Value
Notes
Inner Diameter (ID)
1.75″ (≈ 44.45 mm)
Matches shaft size the bearing is intended for �
Ford Distributing
Outer Diameter (OD)
likely ~ 3.0″–3.5″ (≈ 75–90 mm)
Typical for bearings with ~1.75″ ID
Width
~0.75″–1.0″ (≈ 19–25 mm)
Typical industrial bearing width
To clarify — those OD and width values are estimated based on standard industrial cylindrical bearings with a 1.75″ bore. The exact numbers require either the OEM bearing reference from inside the assembly or measurement from the original part.
What You Can Do Next
Option A — Order the Complete OEM Assembly
You can order M6574 as a complete bearing housing assembly (bearing + housing). Since the original housing is missing, this is often the simplest solution because it fits directly without measurement or machining. �
Ford Distributing
Option B — Source an Equivalent Bearing Separately
If you want to only replace the bearing itself (not the entire housing), you usually need the exact bearing dimensions. Since the bore is 1.75″, a common bearing with that ID is an industrial cylindrical bearing such as:
NU/DN type series (e.g., NU222, NU206E, etc.)
Metric equivalents exist but keyed by OD and width
To pick the right one:
Measure the shaft diameter precisely where the bearing sits — it should be very close to 1.75″ if correct.
Measure the bearing housing inner diameter — this tells you the OD your replacement bearing needs.
Measure the bearing width — this ensures fit and proper spacing.
Then give those three numbers to a local industrial bearing supplier (NTN, NSK, SKF, etc.) — they can match an exact replacement.
Tips for Sourcing Locally
Many industrial bearing shops can match bearings if you take:
The bearing housing
The shaft
Any remaining bearing pieces or the dimensions
They can often cross-reference to standard bearings that are cheaper and easier to source than OEM bits.
Summary
Item
Info
Harley Part #
M6574 (bearing assembly for drive side) �
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Bearing ID (Inner Diameter)
1.75″ (≈ 44.45 mm) �
Ford Distributing
Exact Bearing Code
Not published (OEM keeps only assembly number)
Best Replacement Strategy
Order full M6574 assembly or match bearing measurements for a direct cross
If you want, I can help you estimate a likely bearing cross-reference (e.g., common bearing codes that are a direct physical fit) – just provide the outer diameter and width of your original bearing space (or any measurements you can take).
What the OEM Part Number M6574 Actually Is
Bearing Details
Bore (inner diameter): 1.75 inches (≈ 44.45 mm)
Option A — Order the Complete OEM Assembly
Tips for Sourcing Locally
The bearing housing 
