1Zpresso J-Ultra Replacement Parts: Full List, Prices, and How to Install Them

My J-Ultra’s catch cup stopped seating right after eight months of daily grinding. It would tip and dump grounds mid-pour. I checked with 1Zpresso before ordering anything. Turns out you can buy 1Zpresso J-Ultra replacement parts individually through the official store.

Prices run $5 to $30 each. The burr itself isn’t sold on its own. It’s built for owners dealing with a loose catch cup, a stuck handle, a wobbly shaft, or a worn dial ring.

What Replacement Parts Are Available for the J-Ultra?

1Zpresso sells 12 individual spare parts for the J-Ultra through its official store. Prices run $5 to $30 per part, and the burr isn’t one of them. Here’s the full list, plus what usually sends someone shopping for each one.

Part	What It Does	Sign It’s Worn
Wooden ball (handle knob)	Grip point on the crank	Cracked, loose, spins freely
Foldable handle	Crank arm, folds for storage	Won’t lock open or closed
PC lid	Hopper cover	Cracked, won’t seat
Magnetic catch cup	Holds ground coffee	Won’t seat, falls off mid-grind
Knurled thumb nut	Secures the adjustment assembly	Won’t tighten, strips
Upper bearing cap	Housing for upper bearing	Cracked, won’t seal
Upper bearing	Supports shaft rotation	Shaft wobble
Spring	Tensions the burr assembly	Dial feels loose or inconsistent
Lower bearing cap	Housing for lower bearing	Same wobble as above
Adjustment dial ring	Sets grind size, 8-micron steps	Numbers worn off, ring slips
Anti-slip rubber (base)	Grip on the countertop	Grinder slides while cranking
Leather grip	Wraps the handle or body	Peeling, cracked

A worn burr isn’t a DIY swap. 1Zpresso rates the burr for roughly 100 to 200 kilograms of beans, and once it wears out, that’s a support or warranty conversation, not a spare-parts order. The wooden ball and thumb nut sit at the low end of the price range. The dial ring and catch cup cost more, since they involve tighter tolerances.

Where to Buy Genuine 1Zpresso J-Ultra Parts

Genuine parts come from 1Zpresso’s official online store. One quirk trips people up: 1Zpresso asks buyers to email support before placing a spare-parts order, so the team can confirm the right part for your grinder’s version. Skip that step, and the order can sit on hold.

Shipping comes from Taiwan. Orders dispatch within 14 working days, then take another 3 to 8 days to arrive through DHL Global or Amazon’s US, EU, and Japan fulfillment network. That’s a slow turnaround if you’re hoping for a same-week fix, so order as soon as you spot the worn part rather than waiting.

Weekend orders ship the following Monday. Holiday periods, like Lunar New Year, add extra delay on top of that. A few countries in Asia, South America, and parts of Europe aren’t covered by 1Zpresso’s online store yet, though most US buyers won’t run into that.

Third-party retailers also carry individual parts. Crema and 4Barista, both based in the EU, stock the J-Ultra’s magnetic catch cup as an original spare part, and regional shipping from either can beat ordering direct from Taiwan.

How to Tell Which Part Is Actually Failing

Most “broken” J-Ultra symptoms trace back to one of four parts, not a full grinder failure. Match the symptom to the likely cause before you order anything.

Symptom	Likely Cause	Part(s) to Check
Handle won’t turn or is stuck	Bean fragment above the burr, or a stripped hinge	Foldable handle
Catch cup won’t seat or falls off	Coffee dust on the magnet, or a worn magnet	Magnetic catch cup
Shaft wobbles during grinding	Worn upper or lower bearing	Bearings and caps
Dial ring slips or numbers wear off	Worn ring, or reversed threading	Adjustment dial ring
Grinder slides on the counter	Worn anti-slip base	Anti-slip rubber
Grind size drifts after months of daily use	Often burr wear, not a small part	Burr assembly (warranty case)

One caution worth repeating: the adjustment dial ring and outer burr ring both use left-handed threads. They tighten counter-clockwise, confirmed directly in 1Zpresso’s own support FAQ. Turn the wrong way, and you risk jamming the dial instead of fixing it.

Cleaning solves more “broken part” cases than most people expect. Oil buildup on the burr faces can mimic a dull burr. Dust packed into the dial threads can mimic a worn spring. Before ordering a part, pull the burr carrier, wipe it down with the included brush, and recheck the symptom.

Some 1Zpresso owners have also found the shaft can feel loose straight out of the box, not from wear at all. Before assuming a bearing needs replacing, it’s worth checking the thumb nut underneath the dial ring — more on that in the case study below.

If a stuck handle or a loose catch cup is the issue, our J-Ultra troubleshooting guide walks through the fix before you order a replacement part.

How to Replace the Most Common J-Ultra Parts

The install sequence is nearly the same for every part on this grinder, and none of it needs special tools.

1. Fold out the handle and remove the hopper lid.
2. Twist off the magnetic catch cup — twist, don’t pull straight up, per 1Zpresso’s manual.
3. Unscrew the knurled thumb nut, which uses standard threading, to reach the adjustment dial ring.
4. Turn the dial ring clockwise to loosen it, since it’s left-handed, exposing the upper bearing cap.
5. Swap the worn part, then reassemble everything in reverse order.

A catch cup swap needs no tools at all and takes less time than making a pour-over. A bearing or spring swap goes deeper, down to the burr carrier, so budget more patience for a first attempt than for a repeat job later.

One more thing worth flagging: the burr isn’t user-replaceable, so don’t disassemble past the lower bearing cap unless support has confirmed that’s actually the problem. Going further risks knocking the burr out of its factory calibration, which is a bigger headache than the part you started with.

Real Fix: Tracking Down a Wobbly Shaft

A wobbly shaft is the symptom that scares most owners into assuming the worst. In practice, it’s often simpler than a full bearing replacement.

The situation: grind consistency started slipping after months of regular use, with more fines mixed into the same setting than before. Wiggling the burr carrier by hand, with the handle removed, showed a faint side-to-side play.

The check: rather than ordering a new bearing right away, the fix started with the knurled thumb nut underneath the dial ring. On related 1Zpresso models, owners have reported the lower bearing shaft arriving from the factory without being fully tightened, which produces the exact same wobble and burr rub as a worn part.

The result: tightening the thumbscrew under the dial resolved the wobble without ordering anything. If tightening doesn’t fix it, that’s the point to email 1Zpresso, confirm the correct part, and order the upper or lower bearing directly — not before.

Is It Worth Fixing, and What Does the Warranty Cover?

1Zpresso’s one-year limited warranty covers defects in materials and workmanship. It does not cover rust, human error, or normal wear and tear, so a bearing worn out after years of grinding counts as expected use, not a warranty claim.

The return window is 7 calendar days from delivery for a full refund. After that, refunds drop to 80% of the item’s price, and only apply to items bought directly from 1Zpresso’s own store, not through a third-party reseller.

Here’s the cost case for fixing over replacing: parts run $5 to $30 each, and the J-Ultra itself retails for $199. Replacing two or three worn parts still costs far less than a new grinder, which makes 1Zpresso J-Ultra replacement parts the more practical route for anything short of full burr failure.

There’s one exception. If the burr is worn past its rated 100 to 200 kilogram lifespan, that’s a conversation with support, not a parts order. For anyone still weighing whether a full replacement makes more sense down the line, our J-Ultra review covers the long-term durability side of that decision.

FAQ

Do J-Ultra parts fit other 1Zpresso grinders? 

Some do. The magnetic catch cup, for example, is sold as a shared spare part for both the J-Ultra and the K-Ultra. Always confirm compatibility with 1Zpresso support before ordering, since dimensions can shift between model years.

How long does a J-Ultra burr actually last? 

1Zpresso rates it for roughly 100 to 200 kilograms of beans. For a household grinding once or twice a day, that typically works out to somewhere around 7 to 10 years before performance drops off.

Can I use a generic bearing instead of an official part? 

It’s not recommended. The burr and shaft tolerances are tight enough that a non-original bearing can introduce the same wobble it’s meant to fix. Stick to official parts for anything touching the grind path.

Are the replacement parts food-safe? 

The parts that touch coffee, like the catch cup, are stainless steel or food-grade plastic. 1Zpresso doesn’t publish a formal food-safety certification for these components on its spare-parts pages, so confirm materials directly with support if that matters to you.

What if I order the wrong part by mistake? 

Since 1Zpresso requires an email confirmation before processing spare-parts orders, mistakes usually get caught before shipping. Contact support right away if you’ve already placed an order and suspect an error.