V-slot eccentric spacer lying on a hex face, boss end towards the camera with the 5mm bore visible

V-Slot Eccentric Spacer - 5mm Bore, 8mm Hex, Type A

$1.99 NZD
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V-slot eccentric spacer lying on a hex face, boss end towards the camera with the 5mm bore visible
  • V-slot eccentric spacer lying on a hex face, boss end towards the camera with the 5mm bore visible
  • End view down the bore of the eccentric spacer, showing the bore sitting off-centre in the hex and boss
  • Side profile of the eccentric spacer showing the hex body and the short round boss on one end
V-Slot Eccentric Spacer - 5mm Bore, 8mm Hex, Type A
SKU: 3DP-ECC-SPACER-M5

V-Slot Eccentric Spacer - 5mm Bore, 8mm Hex, Type A

$1.99 NZD
Order before 7:30am for same-day dispatch Dispatch 7 days a week, excluding public holidays

NZ Post: 1-2 days urban · 2-4 days rural

Shipping from $5.99 urban / $9.99 rural, or free pick-up in Te Awamutu.

Buy more, pay less Prices shown are per unit. Add enough of this item and the lower rate applies on its own at checkout. There is no code to enter and you do not need to buy a pack. Choosing a tier here just sets the quantity for you. Larger quantities go out in the same bag, so packing, handling and postage cost us less per unit. We pass that saving straight on to you, so you can buy more for less.

Easy 30-day returns · 12-month warranty

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Add $66.00 for Free Urban delivery ($88.00 for Rural)
Urban $66 Rural $88

Type A eccentric spacer for adjustable V-slot wheels, with a 5mm bore, an 8mm hex and a 7mm boss that sits in the carriage plate hole. The bore is slightly off-centre, so turning the hex with an 8mm spanner moves the wheel in or out against the extrusion and takes the wobble out of the carriage. Sold singly.

Specifications

Bore5mm plain, for an M5 screw
Hex8mm across flats, 6mm tall
Boss7mm diameter, 2.5mm tall
Overall length8.5mm
AdjustmentAbout 1.6mm over half a turn
FinishBright plated metal

Datasheets

Full technical datasheet PDF

What's in the box

1x
Eccentric spacer, Type A

Sold singly. Screw, wheel and nut are not included.

Great for

Replacing a lost spacer

Swap out a missing or rounded eccentric spacer on a V-slot carriage with a 7mm plate hole.

Making a wheel adjustable

Turn a fixed wheel position into an adjustable one on a DIY gantry, CNC or laser frame.

Carriage rebuilds

Fit new spacers alongside fresh 625ZZ POM V-slot wheels when you rebuild a carriage.

Fitting & getting started

  1. Seat the boss

    Push the 7mm boss into the carriage plate hole, with the hex on the wheel side.

  2. Assemble the wheel

    Pass an M5 screw through the wheel, the spacer and the plate, and fit the nut on the far side. Snug it so the hex can still turn.

  3. Set the preload

    Turn the hex with an 8mm spanner until the wheel just grips the extrusion. The wheel should still turn by hand with light drag and the carriage should not rock.

  4. Lock it

    Hold the hex still, tighten the nut, then recheck the wheel. Our V-slot wheel adjustment guide covers the whole carriage.

Note: If your old spacer takes a 10mm spanner or is noticeably longer than 8.5mm, it is a larger type and this one will not swap straight in.
Related guide How to Adjust and Replace V-Slot Wheels on a 3D PrinterDiagnose wobble, binding and flat spots, then adjust or replace a 625ZZ POM V-slot wheel without losing the original hardware order.

Frequently Asked Questions

Answers to the questions buyers ask most.

Will it match the spacer on my printer?
Check three sizes on your old one. This Type A spacer takes an 8mm spanner, has a 6mm tall hex and a 7mm boss that sits in the plate hole, with a 5mm bore and 8.5mm overall. If your old spacer takes a 10mm spanner or is longer, it is a larger type and needs a matching replacement.
How many do I need?
One for each adjustable wheel. A three-wheel carriage usually has one eccentric wheel and a four-wheel plate usually has two; the other wheels sit on plain spacers. Four or more get 25% off, ten or more 35% off.
Which way do I turn it?
Either way. The offset bore moves the wheel towards the extrusion for half a turn and away for the other half, so turn the smallest amount that removes the play, then lock the nut.
Is a screw or nut included?
No, this is the spacer only. It suits a standard M5 screw long enough to pass through the wheel, the spacer and the plate with room for the nut.
Does it suit the 625ZZ POM V-slot wheel?
Yes. The 5mm bore lines up with the 5mm bearing bore of our 625ZZ POM V-slot wheel on a common M5 screw.

Have a Question About This Product?

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Why Buy from NZN

Useful parts, fair prices and someone local to help.

I'm Lukas, an engineering student and maker based in Te Awamutu. NZN grew out of a CNC build that dragged on for months because every missing cable, bolt or electronic part meant another overseas order. I started the shop so Kiwi makers can spend more time building and less time waiting for the next parcel.

More about NZN Electronics

  • Stocked here in New Zealand

    Orders are picked and packed in Te Awamutu and dispatched within 24 hours every day, excluding public holidays. NZ Post target delivery is 1-2 days urban and 2-4 days rural. In Te Awamutu and Kihikihi you can choose local delivery at checkout: same day if you order before 8am, otherwise next day.

  • Fair prices, clearly shown

    Prices are kept competitive and quantity discounts are shown upfront. Free delivery starts at $66 for urban addresses and $88 for rural addresses.

  • 30-day returns and 12-month warranty

    Get in touch if something is not right and we will help sort it.

  • Practical product support

    Ask a product question and get help from a real person in New Zealand who knows the range.

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