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CNC Bearing Block Assembly

-----Discontinued - For information only  -----

-6061 Aluminum Construction -

Strong, rigid, compact, and adjustable.


CNC Bearing block provides excellent strength, as much as, 20 times improved performance over HDPE plastic. Enhanced design allows for adjusting the tension on the bearings for zero backlash.


  1. Superior strength: About 20 times stronger and stiffer than HDPE.

  2. Minimized lateral forces: less than 3:1 vertical to horizontal force ratio. Will not separate from rod.

  3. Adjustable tension for zero backlash:  Will not relax like HDPE plastic.

  4. Can be used in any position: Perfect for X-axis and Y-axis.

  5. Easy to mount:  Has predrilled and tapped holes.

  6. Stainless steel, sealed, and pre-lubricated bearings: Long life and smooth operation.


 Shown on an X-axis gantry table with 1/2 inch steel rod.


5/8 Thick 6061 Aluminum plate

Drilled and tapped for 5/16-18 bolts


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To fit 0.5 in. (12.7mm) round rod (CNC-BB0.5):

Dimensions: 2.25" x 1.85" x 0.625" thick. (without bearings).

From Center of shaft to top: 1.5".

Mounting holes (2): tapped 5/16" x 18tpi x 5/8 deep. Spaced 1.375" centered on top of block.

Required bottom clearance 0.675" from center of shaft" (0.75" preferred).

To fit 1.0 in. (25.4mm) round rod (CNC-BB1.0):

Dimensions: 3.00" x 2.00" x 0.625" thick. (without bearings).

From Center of shaft to top: 1.75."

Required bottom clearance 0.7" from center of shaft" (0.875" preferred).

Mounting holes (2): tapped 5/16" x 18tpi x 5/8 deep. Spaced 1.75" centered on top of block.

Material: 6061 Aluminum plate. 

Bearings: 22mm OD x 8mm ID x 7mm W, Chrome Steel Bearngs, sealed and lubricated for long life.

Mounting screws: Two Per block: Hex socket cap screw 5/16" dia x 18tpi x 1.25"L. Choice of flat head or standard head.

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Requests for blocks to fit custom size shafts will be considered. Call or email your needs. Minimum order of 4 pieces on custom sizes.

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Pricing: Bearing Block complete with bearings and all hardware.

$35.00 each (USD)

$125.00 Set of 4

Included mounting screws are 5/16"dia x 18tpi x 1.25L". Please specify Flat head or Standard cap screw for mounting (2 pieces per bearing block).
Free delivery to USA and Canada only. Additional $10.00 for international shipments) .

Note: Steel guide rod NOT included.

Contact: Vancura Innovations

Phone: +1.309.756.0769


Purchase On-line: PAYPAL

Shop On-line With PAYPAL All prices are in US dollars and include USPS first class shipping.
Item Name:

Item No.

Price: (USD)

Bearing Block Assembly 0.5" with hardware & bearings CNC-1X-BB0.5 $35.00
Bearing Block Assembly 1.0" with hardware & bearings CNC-1X-BB1.0 $35.00
Bearing Block Assy. 0.5" (4 pieces) with hardware & bearings CNC-4X-BB0.5 $125.00
Bearing Block Assy. 1.0" (4 pieces) with hardware & bearings CNC-4X-BB1.0 $125.00
Hex Flat Head Screws 1.25" (2 per Block) CNC-BB-SCREW-FH $2.00
Socket Cap Screw 1.25" (2 per Block) CNC-BB-SCREW-STD $2.00
International Shipping Charge (USPS) CNC-INT-SHP $24.00
Note: Specifications subject to change without notice. The information in this document is believed to be accurate. Vancura Innovations assumes no responsibility for possible printing errors and omissions. If you have any questions about the products offered, please contact us at the number or email address below.

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Contact Information:

e-mail Address:

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Copyright © 2002-2016 Vancura Innovations, Rock Island, IL
Last modified: March 27, 2016