Custom machined part
Plastic bearing blocks & pillow blocks
- Mounting
- Base or flange
- Construction
- Direct bore or with insert
- Access
- Solid or split
- Starting point
- Old block or drawing
Machined plastic bearing blocks that mount to your frame and carry the shaft, often running dry where metal units need grease. Solid or split, matched to your old block or made to your drawing.
- ±0.002"–±0.005" on critical dimensions
- Family owned in Aurora since 1986
- Expedited service for breakdowns
What a bearing block does
Holding the shaft where it belongs
A bearing block fixes the shaft’s position on the frame and carries its load into the machine. That’s what makes the mounting as important as the bore.
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Base-mounted (pillow block)
Bolted down through its base. The shaft load travels through the block body into the frame below.
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Flange-mounted
Bolted flat to a wall or side plate. The bolts sit directly in the load path.
Replacing or switching?
Why buyers change a bearing block
These are reasons to look at the block, not promised results. Tell us which one brought you here.
In the metal unit
- Corrosion in washdown Rust on housings and bearings in wet service.
- Grease washing out Lubricant displaced by washdown or water.
In the block
- Worn or oval bore The shaft has lost its position or runs loose.
- Scoring or edge wear Often a sign of misalignment between supports.
- Cracking or creep At the mount, under load or heat.
Around it
- Obsolete footprint The old block is gone, but the machine centerline must stay.
- Hard to reach A split block avoids pulling the shaft.
What defines the block
Will it bolt in and hold centerline?
Replacing a standard metal unit? The bearing number may be enough to start. Otherwise, these four things define the block.
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Mounting
- Base or flange
- Bolt pattern
- Hole type or threads
- Overall size
- Or the metal unit’s bearing number
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Shaft position
- Center height
- Bore axis
- How the other supports line up
- Solid or split
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Shaft and load
- Shaft size
- Shaft material and finish
- Radial, axial or impact load
- Speed and duty
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Conditions
- Washdown and chemicals
- Temperature and moisture
- What failed
Getting a quote
Start with what you have
Any one of these is enough to get a quote started. Pick yours to see what helps.
Send the drawing and we machine to it.
- Quantity
- Plastic, if specified
- Direct bore or insert
Upload drawings, CAD files or photos on the quote form.
Send the old block, with its shaft or the shaft size.
- What failed
- Load and speed
- Quantity
Upload drawings, CAD files or photos on the quote form.
Send what you know. We’ll ask for the rest.
- Bolt pattern and center height
- Shaft size
- A photo of it mounted
Upload drawings, CAD files or photos on the quote form.
Plastics for bearing blocks
Common choices, and why
Running dry depends on the load, speed, heat and the shaft. It isn’t maintenance-free by default.
- UHMW Low friction and corrosion-proof, a common choice for wet, lighter-duty shafts.
- Acetal Stiff and dimensionally stable, so the bore holds its size.
- Nylon Strong and wear-resistant. It takes on moisture, which we allow for in the bore.
- Oil-filled nylon Added lubricity for running dry.
- PEEK For heat and harsh chemicals.
- Detectable grades Metal- and X-ray-detectable plastics, for lines with inspection systems.
Switching from metal?
Plastic or metal bearing blocks
Plastic suits many shaft supports, but not every one. Load, speed and heat all matter.
Where plastic helps
- No corrosion
- Unaffected by washdown, water and many chemicals.
- Can run dry
- In suitable duty, with no grease to wash out or contaminate product.
- Lighter
- Easier to handle and fit.
- Quiet contact
- No metal-on-metal at the bore.
Machined in Aurora
How your bearing blocks are made
±0.002"–
±0.005"
On critical dimensions, depending on the plastic. Specs and CAD files are kept, so a reorder matches the last batch.
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Bored to your shaft
The bore and center height machined to your shaft and frame.
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Threads that last
Mounting holes tapped directly, or fitted with threaded inserts for durable threads in plastic.
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Assembled and ready to fit
Split halves and inserts delivered assembled with standard hardware, so there’s no second supplier.
Evaluating a supplier? See the shop and how we check the work.
Buyer questions
Bearing block FAQs
Something else? Call (630) 904-2525.
Not on its own. A rigid bore doesn’t self-align, so alignment comes from how the blocks are mounted. Tell us how the supports on your shaft line up.
No. Dry running can suit the right plastic and duty, but heat, load, speed, alignment and the shaft still decide how a bearing wears. Tell us how yours runs.
Your design sets the load the block has to carry, and we machine to your drawing. Include the load, speed and duty with your request so we can suggest suitable plastics.
We hold ±0.002" to ±0.005" on critical dimensions, depending on the plastic. We review your drawing and confirm the critical dimensions, such as bore and center height, with your quote.
Timing depends on the block, plastic and quantity, and comes with your quote. For an emergency breakdown, ask about our expedited service.
Not a bearing block?
Find the right part
We machine almost any plastic part. If yours isn’t listed, describe it in a quote request.
Standard quote
Ready to send your bearing block details?
Experienced help from your first quote to the finished part.