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    Available in two sizes 1'x3' and 1'x2' routing areas.
  • Mechanics to Minimize Backlash
    Running on tensioned roller chain to eliminate backlash and small drive sprockets to increase mechanical precision.
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    Perfectly manage the cables and hoses with these cable chains.
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Mechanical Parts for the DIY CNC Machines

Probably the most imporatant part of the CNC Machine and the most challenging to implement. I will try to make it easy for you by offering the common component that can be used in your DIY CNC Router. These parts are especially selected to work with motors used in the DIY community and took me quite a while to find the perfect combinations. Please read the conditions of purchase prior to purchasing any products offered by BuildYourCNC.com.


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1/2" Anti-Backlash Lead Nut

$25.50
Qty:
Price OptionsYour Cart
1/2" Lead Screw per inch (Steel)

$2.00
Total Length:
1/2

This is out 1/2" 5 start and 10 TPI ACME precision lead screw that translates to 2 turns per inch. Mate this lead screw with this anti-backlash nut.

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See instructions for this product.
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3/8" Anti-Backlash Nut

$27.95
Qty:
3/8

This is a nut that uses a spring to reduce/eliminate backlash used with lead screws on motion related applications. This anti-backlash nut is mated with the 3/8" 5 start 10 TPI lead screw

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3/8" Lead Screw per inch (Steel)

$2.10
Total Length:
3/8

This lead screw specifications: 5 turns per inch, 3/8" outside diameter lead screw, 10 threads per inch and has 2 starts (making it 5 turns per inch). The lead screw is ACME precision and mates perfectly with this anti-backlash nut.

See instructions for this product.
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1/4" Inside Diameter Collar

$6.50
Qty:
3/8" Inside Diameter Collar

$6.50
Qty:
1/2" Inside Diameter Collar

$7.95
Qty:
5/8" Inside Diameter Collar

$7.95
Qty:
7/8" Inside Diameter Collar

$8.75
Qty:

These parts are typically used to stabilize lead screws (so they don't move axially). Notice the open cut and the screw configuration. This is called the clamp style of collar so that there is a very tight and non-slipping condition and is made of steel. These collars will also reduce the damage on the lead screw by not using set-screws.

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1/2" ID Drive Sprocket - 14 teeth

$11.95
Qty:

You have a motor with a 1/2" shaft and looking for the fewest number of teeth to achieve the highest possible mechanical resolution. The sprocket has 14 teeth with .25" pitch for a total of 3.5 inches of travel in one turn of the motor. Here are the resolutions at varying microsteps (in steps per inch): Full Step - 57.143, 1/2 - 144.286, 1/4 - 228.571, 1/8 - 457.143, 1/16 - 914.286, 1/32 - 1828.571.

See instructions for this product.
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1/4" ID Drive Sprocket (9 teeth)

$10.95
Qty:
5/16" ID Drive Sprocket (11 Teeth)

$10.95
Qty:

You need a sprocket that connects to the motor, is small and has the fewest number of teeth possible for the best resolution. This drive sprocket has a 1/4" bore so it will fit most NEMA 23 and 24 motors. The sprocket has only 9 teeth with .25" pitch for a total of 2.25 inches of travel in one turn of the motor. That's 1422.222 steps per inch with 1/16 microstepping and the standard 200 steps per revolution.

See instructions for this product.
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Idler Sprocket

$15.95
Qty:

This is the same sprocket that guides #25 chain and drive sprocket. The sprocket has 20 teeth with a .25" pitch and contains an R6 ball bearing with a 3/8" ID (inside diameter).

See instructions for this product.
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#40 Drive Sprocket

$16.95
Qty:
number 40 drive sprocket

Notice the very large bore (hole) in the drive sprocket. That bore won't fit any motor generally used in the DIY CNC community, but accompanied with a collar that reduces the bore, now you have a great combination that fits well with 1/4" shafts.

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See instructions for this product.
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#40 Idler Sprocket (No bolt/nut)

$17.95
Qty:
#40 Idler Sprocket with bolt and nut

$19.95
Qty:

You can use this mechanism to either help position the roller chain to assist the drive sprocket, or be used as a free wheel for one end of a loop of roller chain. This sprocket has a 5/8" inside diameter and 17 teeth and can be sold with the 5/8" bolt and nut if desired.

See instructions for this product.
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#25 Roller Chain (per foot)

$2.40
Total Length:

This is the chain that mates with the #25 sprockets. Use this chain to achieve the finest resolution roller chains can offer. The material is steel and the pitch is .25". This chain is sold by the foot. Adjust the quantity in the cart to specify the length of roller chain.

See instructions for this product.
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#25 Roller Chain Link

$0.95
Qty:
#25 Roller Chain Links with pencil in background for scale.

Spring type connecting link for use with single strand chain ANSI number 25. .25 inch pitch.

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#40 Roller Chain (per foot)

$5.00
Total Length:

This is a single strand steel #40 chain that matches the pitch of the #40 sprockets. All links are riveted and can handle 437 pounds of working load.

See instructions for this product.
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#40 Roller Chain Link

$2.75
Qty:
Roller Chain Link #40 shown with a pencil tip for scale.

Spring type connecting link for use with single strand chain ANSI number 40. .50 inch pitch.

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.08" Pitch Timing Belt 1/4" wide (per inch)


$0.50
Total Length:

Single sided timing belt (belt with trapezoidal teeth) to keep a good position with linear motion applications. Urethane with Kevlar cords, pitch is .08" and the width is 1/4". This item is sold by the inch. Update the quantity with the number of inches desired.

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20 Teeth .08" Pitch MXL Drive Pulley

$15.85
Qty:

This is an MXL size drive pulley with a .08" pitch. Connect these directly to a 1/4" motor shaft and use a .08" pitch timing belt. Maximum width belt that will fit is 1/4".

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.2" Pitch Timing Belt (per foot)

$4.60
Total Length:

Single sided timing belt (belt with trapezoidal teeth) to keep a good position with linear motion applications. Urethane with Kevlar cords, pitch is .200" and the width is 3/8". This item is sold by the foot. Update the quantity with the number of feet desired.

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14 Teeth .2" Pitch Drive Pulley

$7.40
Qty:

This is a drive pulley with a .200" pitch. Connect these directly to the motor shaft and use a .200" pitch timing belt. The bore is 1/4" with a set screw to by used with a 1/4" motor shaft.

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3/4 x 3/4 1/8 Aluminum Rail 6061 per foot - specify full amount needed in QTY, send email with specific cut lengths

$1.20
Total Length:
3/4 x 3/4 x 1/8 Aluminum Rails 6061

We use these aluminum rails as guide rails that the v-groove bearings ride along. The aluminum specification is 6061-T6 which is known for its structural characteristics.

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HIWIN Linear Guide Block

$69.99
Qty:
HIWIN Linear Guide Block

These HIWIN Linear Guide Flange Blocks pair with the HIWIN linear rail and provide both high rigidity and seamless, quiet operation.

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HIWIN linear rail - per inch

$4.00
Qty:
HIWIN linear rails

These HIWIN Linear Guide rails represent the highest quality in terms of material and machine stability.

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Linear Ball Bearing Block 20mm

$12.99
Qty:
Ball Bearing Block - Front View

These 20mm Linear Ball Bearing Blocks are made to fit on our 20mm Linear Guide Rails.

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Linear Guide Rail - 11 inch length

$29.70
Qty:
Linear Guide Rail with view of both sides

We now offer Linear Guide rails made of high-quality hardened steel to add a new dimension of reinforcement to your machine. These rails pair with our 20mm Linear Ball Bearing Blocks.

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