This post contains affiliate links. We may earn a commission if you buy via our links, at no extra cost to you. Full disclosure →
Ninja JC151UK Cold Press Juicer: The Pure Juicing Pick from Ninja
The Ninja JC151UK is the focused, juicing-only member of Ninja’s cold press lineup — earning Amazon’s Choice in the masticating juicer category with a 4.5-star rating from over 518 verified UK buyers and 600+ units sold every month. Where its sibling, the JC152UK 3-in-1, adds slicing and shredding attachments, the JC151UK concentrates every design decision on one goal: extracting the best possible cold pressed juice from fruit and vegetables, quietly and reliably, every single morning. If you’re comparing slow juicers or masticating cold press machines and want to know exactly what this model offers — and what it doesn’t — this review covers everything you need to decide.
How Cold Press Juicing Works — and Why It Beats Centrifugal
The JC151UK is a masticating juicer — also called a slow juicer, cold press juicer machine, or slow press juicer. Rather than spinning a high-speed disc to shred ingredients (as centrifugal juicers do), it uses a single rotating auger to slowly crush and squeeze produce at low RPM. This difference has real consequences for nutrition. Fast-spinning centrifugal juicers generate friction heat and introduce air into the juice as they extract, degrading heat-sensitive vitamins like vitamin C and B-group vitamins and triggering rapid oxidation — the process that turns freshly made juice brown within 20 to 30 minutes.
Cold press juicing at 40–80 RPM preserves far more of the plant’s natural enzymes, phytonutrients, and vitamins because the auger presses rather than tears plant cells. The result is a more nutritious drink with a brighter colour, smoother texture, and a shelf life of up to 72 hours in a sealed fridge container, compared to roughly 30 minutes for centrifugally extracted juice. This is why professional juice bars and wellness brands almost exclusively use masticating cold press technology rather than centrifugal machines.
The 9-Segment Auger: What Ninja Redesigned and Why It Matters
The technical centrepiece of the JC151UK is its redesigned 9-segment auger — a specific improvement over the predecessor JC100EU model that Ninja explicitly highlights in the product specification. Traditional masticating augers work as a single continuous screw: produce is caught at the top and compressed progressively toward the juice outlet. While effective, this single-pass compression can struggle with fibrous ingredients — kale stems, celery, dense root vegetables — that can accumulate inside the chamber and cause mid-session clogging.
The 9-segment design breaks extraction into multiple discrete crushing and pressing stages. As produce moves through the auger, each segment applies increased compression before handing off to the next — a staged process that progressively squeezes out juice while continuously pushing pulp toward the outlet. Ninja tests this specifically against 320g of carrots as the benchmark for handling tough root vegetables without jamming. In everyday use, the result is fewer stops to clear blockages, less need to use the reverse function, and noticeably drier pulp — a reliable sign that more juice has been extracted from the same quantity of produce.
Dual Pulp Filter System: Control Over Juice Texture
The JC151UK ships with two interchangeable pulp filters — one fine-mesh and one coarser — and this is more useful than it sounds. The filter mesh determines not just how smooth your cold pressed juice is, but also how much dietary fibre carries into the glass. The fine filter produces smooth, clear, restaurant-grade slow press juice — ideal for apple, orange, cucumber, and delicate green blends. The coarser filter retains more natural fibre, slowing the glycaemic response and producing a thicker, more satiating drink suited to post-workout or meal-replacement use.
For households with different needs across the day — a light fruit cold press juice in the morning and a thick vegetable blend after exercise — having both filters included means two distinct drink results from one masticating juicer without buying accessories separately. Swapping filters takes seconds and doesn’t require disassembling the whole machine.
Quiet Operation: What It Actually Means in Practice
Ninja positions the JC151UK as quiet, and masticating cold press juicers are genuinely quieter than centrifugal machines as a category — the physics of low-RPM compression versus high-speed blade spinning produces a fundamentally lower noise profile. You’ll hear a steady, low motor hum and the rhythmic compression sound of the auger working through produce, but this is a consistent background tone rather than the sudden jarring whirr of a centrifugal juicer or high-speed blender. In practice, the JC151UK can run comfortably at 6am without waking people in adjacent rooms, and it won’t disrupt a video call if you’re working from a kitchen-adjacent space.
Ninja Cold Press Juicer Machine: Ease of Use and Daily Workflow
Ninja’s three-step process for the JC151UK is: assemble, feed, pour. The parts lock together cleanly, and the feed chute guides produce directly into the auger. A tamper is included to press softer ingredients — leafy greens, berries, soft citrus — gently into the chute when gravity alone isn’t sufficient. The tamper design matters: a well-shaped tamper lets you keep a continuous feed pace without stopping.
One critical practical factor to plan around before buying: the JC151UK’s feed chute measures approximately 75mm in diameter — standard across Ninja’s cold press range at this price, but considerably narrower than the 165mm wide-mouth feed chutes on models like the AMZCHEF or AAOBOSI slow juicers. Whole apples, large oranges, full beetroots, or full cucumbers need to be halved or cut to fit. For a one-to-two person morning juicing routine, this adds roughly two to four minutes of prep. For a family-sized batch session, the prep accumulates. If minimal prep time is the priority, a 165mm wide-chute masticating juicer offers a real advantage; if you value Ninja’s brand warranty and anti-clog auger engineering, the JC151UK remains a strong daily-use cold press machine.
What’s in the Box
The JC151UK package includes: Ninja Cold Press Juicer motor base, 700ml juice jug, 1.1L pulp container, tamper, two pulp filters (fine and coarse), cleaning brush, and a recipe inspiration guide. The 1.1L pulp container is proportionally large relative to the 700ml jug — intentionally so. Masticating cold press juicers produce a substantial quantity of dry pulp as a by-product of thorough extraction, and a larger container means you can complete a full juicing session without stopping to empty it midway. The dry, compact pulp from a well-engineered cold press machine is also easy to repurpose: in baking, as compost, or as a vegetable stock base.
Cold Press Juicer Machine: Dimensions and Kitchen Fit
At 40.46cm tall, 18.16cm wide, and 30.75cm deep, the JC151UK has a slender profile that suits narrower UK kitchen worktops. The 18cm width is one of its more practical attributes — many masticating juicers spread wider due to horizontal auger designs, but the vertical auger configuration keeps the footprint compact. At 3.6kg it’s light enough to move between storage and the counter easily, though most owners will keep it permanently on the worktop to reduce the daily assembly barrier.
Cold Press Juicer Machine Cleaning and Maintenance
All removeable parts on the JC151UK are dishwasher safe, which makes post-session cleanup straightforward. The juice jug, pulp container, auger, and filter basket can go in the dishwasher on the top rack. For best results, rinse each part under running water immediately after use before pulp has the chance to dry onto surfaces — this takes 60 seconds and makes the dishwasher cycle more effective. The included cleaning brush is designed for the filter mesh, where fine fibres can lodge in holes if left to dry. The motor base must only be wiped with a damp cloth and never submerged.
JC151UK vs JC152UK: Which Ninja Cold Press Juicer Is Right for You?
The JC152UK 3-in-1 adds slicing and shredding disc attachments alongside cold press juicing, making it a combined juicer and food processor at a higher price point. It’s the smarter buy if you regularly want to prepare courgette noodles, sliced salad vegetables, or shredded ingredients in the same session as juicing.
The JC151UK is the better value for dedicated juice drinkers. The core slow juicing mechanism — the high-torque motor, 9-segment auger, dual filter system, and dishwasher-safe parts — is identical across both models. Choosing the JC151UK means paying only for the cold press function you’ll use every day, without subsidising food processor capabilities you may never need. For straightforward daily masticating juicing, the JC151UK delivers identical juice quality at a lower outlay.
JC151UK vs AMZCHEF 165mm: Brand vs Wide Chute
The AMZCHEF Cold Press Juicer 165mm offers a wide-mouth 165mm feed chute — more than double the Ninja’s ~75mm — dramatically reducing prep time for whole fruit and vegetables. It also includes dual strainer baskets for nut milk and sorbet-making, functions the JC151UK doesn’t support. For families or high-volume batch juicing, the AMZCHEF’s wider chute is a meaningful daily convenience advantage.
The JC151UK counters with brand confidence: Ninja holds 96% positive ratings from over 10,000 UK Amazon customers, a redesigned 9-segment anti-clog auger that specifically targets the most common failure point of budget wide-chute masticating juicers, and a 2-year UK guarantee with established customer support. If chute width is your priority, choose the AMZCHEF; if brand backing and clog-resistance engineering matter most, choose the Ninja JC151UK cold press juicer machine.
JC151UK vs AAOBOSI 165mm: Cleaning Ease vs Brand Engineering
The AAOBOSI 165mm cold press juicer’s standout feature is its 360° No-Hole Filter — a solid-surface filter that rinses clean in seconds without pulp clogging mesh holes. For buyers who find cleaning masticating juicers time-consuming, this is a genuine advantage. The AAOBOSI also carries GRS sustainability certification and is Amazon Climate Pledge Friendly.
The JC151UK wins on brand recognition, Ninja’s 9-segment anti-clog auger technology, and the confidence of buying from a major UK appliance brand. Choose the AAOBOSI if daily cleaning speed is your main concern; choose the JC151UK if you want trusted slow juicing engineering and Ninja’s brand support.
What Owners Say About the Ninja Cold Press Juicer Machine
“Makes brilliant juice every morning. I prep my fruit the night before so it’s literally just feed and pour when I wake up. Much quieter than I expected for a cold press machine.”
“Had a centrifugal juicer before and the difference is noticeable — the colour stays brighter and it doesn’t go brown for hours. Really happy with this slow juicer.”
“The two filters are a nice touch. Fine one for my morning apple and ginger juice, coarse one for a thicker vegetable blend after a workout. Good all-round cold press machine.”
Ninja JC151UK Cold Press Juicer Machine Specifications
- Model: Ninja JC151UK
- Auger: 9-segment cold press design
- Juice jug: 700ml
- Pulp container: 1.1L
- Dimensions: H40.46cm × W18.16cm × D30.75cm
- Weight: 3.6kg
- Colour: Grey
- Filters: 2x pulp filters (fine and coarse)
- Dishwasher safe: Removeable parts (top rack)
- Feed chute: ~75mm
Pros and Cons Summary
What We Like
- Amazon’s Choice — 4.5 stars from 518+ UK verified reviews
- Redesigned 9-segment auger specifically targets clogging
- Dual pulp filters (fine and coarse) included in the box
- Dishwasher-safe removeable parts for easy daily cleanup
- Quiet motor — usable at early morning hours
- Slim 18cm width fits narrow kitchen worktops
- Ninja 2-year UK guarantee and customer support
Worth Knowing Before You Buy
- ~75mm feed chute requires more prep than 165mm wide-chute rivals
- 700ml jug suits 1–2 servings — not designed for family batch juicing
- Juicer only — no slicing or shredding function (see JC152UK for 3-in-1)
- No nut milk or sorbet mode unlike some competitors
Our Verdict: Ninja JC151UK Cold Press Juicer Machine
The Ninja JC151UK cold press juicer machine is the right choice for individuals or couples who want reliable, quiet slow juicing from a brand they trust, without paying for food processing extras they won’t use. The 9-segment anti-clog auger handles daily juicing consistently, dual filters provide genuine texture flexibility, and dishwasher-safe parts keep maintenance manageable. The ~75mm feed chute is the real trade-off versus 165mm wide-mouth rivals at a similar price — if batch juicing for a family, a wide-chute model saves meaningful daily prep time. For a focused solo or couple’s cold press routine, the JC151UK is a compact, quiet, and well-supported masticating juicer that earns its Amazon’s Choice status.
Check the latest price on Amazon — this model frequently carries a limited-time voucher that reduces the price at checkout.
Ninja Cold Press Juicer Machine FAQs
What is the difference between the Ninja JC151UK and JC152UK?
The JC152UK adds slicing and shredding disc attachments, making it a 3-in-1 cold press juicer and food processor. The JC151UK is a dedicated slow juicer. The core cold press mechanism — motor, 9-segment auger, dual filters — is identical in both models. Choose the JC152UK if you want food processing versatility; choose the JC151UK if you want pure cold press juicing value.
Can the Ninja JC151UK juice leafy greens like kale and spinach?
Yes. Masticating juicers handle leafy greens better than centrifugal machines because the slow auger squeezes juice from leaves without flinging them into the pulp basket too quickly. Roll leafy greens into tight cylinders before feeding, alternate with harder produce like apple or cucumber, and use the tamper to guide them into the chute.
How long does cold pressed juice from the JC151UK stay fresh in the fridge?
Cold pressed juice from a masticating juicer like the JC151UK stays fresh in a sealed, airtight container in the fridge for up to 72 hours — a significant advantage over centrifugally extracted juice, which typically oxidises within 30 minutes. Fill storage bottles to the brim to minimise air exposure and refrigerate immediately after juicing.
Is the Ninja JC151UK suitable for hard vegetables like carrots and beetroot?
Yes — Ninja benchmarks the 9-segment auger specifically against 320g of carrots for clog resistance. Cut hard root vegetables to lengths that fit the ~75mm feed chute and alternate with softer produce to maintain smooth flow through the auger. Rinse beetroot-stained parts immediately after use before the pigment sets.
What warranty does the Ninja JC151UK carry in the UK?
Ninja UK products typically carry a 2-year guarantee when purchased from an authorised retailer such as Amazon via SHARKNINJA EUROPE LTD, covering manufacturing defects and giving access to Ninja’s UK customer support team for troubleshooting, parts, and replacements.
