Singer Heavy Duty 4423 Sewing Machine

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80  Reviews Customer score 98%
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10 Year Warranty & FREE Gift

The latest 2021 version Singer Heavy Duty 4423 Sewing Machine has all the power you'll ever need. The extra high sewing speed is up to 1,100 stitches per minute. This machine packs the power and speed to quickly take on any sewing project.

Traditional heavy duty styling and high build quality needed for years and years of trouble free sewing, with 23 stitch functions as well as one step automatic button holes and built in auto needle threader, it's an ideal sewing machine for schools, colleges or any sewing enthusiast that needs a strong and reliable sewing machine to last many years.

Singer have designed the 4423 Heavy Duty with simplicity in mind, threading is a breeze, lay the thread in the groove helps threading this machine in less than six seconds! Top drop in spool, auto spool winder, select a the desired stitch, then away you go... It has a full range of utility and stretch stitches. Accessories can be stored is the free arm extension compartment.

For a sewing machine to made in this colour "battleship grey" you know it must have outstanding features, for example the 4423 Heavy Duty uses a electronic foot speed controller, this feature is most useful when sewing through multiple (6-8) layers of fabric. It guarantees consistent sewing speed no matter how many layers of fabric you are stitching through.

It has a extra high foot lifter and box feed system, together provide constant and even moment of the fabric being sewn.

Built-In Stretch Stitches
Specially designed stitches that add strength and flexibility to seams, especially useful when sewing on knitwear and super stretch fabrics.

Adjustable Stitch Length and Width
Each stitch function can be adjusted to personalize length or width.

One-Step Automatic Buttonholes
Buttonhole sewing is a one step simple process, providing reliable results.

3 Needle Positions
Needle position can be changed for individual projects, left, centre or right such as inserting zips or cording and topstitching.

Top Drop-in Bobbin
As well as the loading bobbin the hook unit which carries the thread is rotary system making for bets stitching results at faster speeds.

Automatic Needle Threader
After effortlessly threading the machine this feature automatically threads the eye of the needle!

Automatic Bobbin Winding Clutch
Needle bar automatically disengages when winding the bobbin, making bobbin winding safer.

Aluminium Frame
The internal chassis of the Singer Heavy Duty is metal. This rigid support holds all the mechanisms in perfect alignment for perfect, skip-free sewing.

Key Features:

  • 23 Stitch Patterns
  • 1,100 Stitches per Minute
  • Fully Automatic 1-Step Buttonhole
  • Built-In Automatic Needle Threader
  • Top Drop-in Bobbin
  • Strong Rotary Hook Unit
  • Stainless Steel Bed Plate
  • Adjustable Presser Foot Pressure
  • Adjustable Stitch Length & Width
  • Drop Feed for free motion embroidery
  • Heavy Duty Metal Internal Frame for strength and reliability
  • High Presser Foot Lift

Included Accessories:
General  All Purpose Foot, Zipper Foot, Buttonhole Foot, Button Sewing Foot, Seam Ripper/Brush, Quilting/Edge Guide, Needles, Spool Holders, Bobbins, Screwdriver, Spool Pin, Spool Felt, Soft Cover, Foot Pedal, Power Cord, Instruction Manual


Product Features
Code 0374318830186
Brand Singer
Model Heavy Duty 4423
Classification Sewing Machine
Complimentary 10 Year Warranty & FREE Gift
Guarantee Extended Warranty 10 Years Parts and Labour
Approximate Weight (kg) 8.5
Dimensions W41 cm x H29 cm
Electronic Foot Pedal Yes
Bobbin Location Top Loading
View Through Bobbin Cover Yes
Hard Cover Included No
Auto Thread Tension No
Built-in Threader Yes
Thread Cutter Manual
Stitches 23
Utility Stitches Straight, Zig-Zag, Multi Zigzag, Blind Hem, Stretch Blind Hem, Straight Stretch, Overlock Stretch, Scallop, Ric Rac, Honeycomb, Herringbone, Gathering, Applique, Sew-On Buttons, Quilting Stitches, Closed Overedge
Buttonhole Steps 1 Step Auto
Buttonhole Styles 1
Twin Needle Optional
Max Speed Setting (spm) No
Needle Up/Down Function No
Built-in Top Feed No
Built-in Drop Feed Yes
Hook Movement Smooth Rotary Action
Needle Positions Left / Right / Centre
Tutorial CD / DVD No
Voltage 220-240 Volts
Customer Reviews

Items 1 to 10 of 80 total

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  1. By Richard P

    Overall rating
    Great service. The sewing machine arrived the day after I ordered and the free gift of scissors was a nice touch. My wife loves it and is looking forward to making some new chair covers with it.

    Review by from Cornwall on

  2. By Anna N

    Overall rating
    Wouldn't dream of buying anything other than a Singer, my mum was a dressmaker & Singer demonstrator back in the 1950's! I was sad to say goodbye to my previous Singer having sewn our daughter's wedding dress, my own outfit, bridesmaids dresses etc for family weddings. But I'm really pleased with my new heavy duty machine which glides effortlessly through 4 layers of denim, brilliant. No complaint with foot pedal either, as some have mentioned, however I always sew barefoot, maybe that aids control? Great value for money, thank you.

    Review by from Flamborough on

  3. By Ann I

    Overall rating
    Fast and efficient delivery service. Excellent machine from a long standing company. Look forward to many years of sewing.

    Review by from Gateshead on

  4. By Greg

    Overall rating
    Great online service for letting me know when this product was back in stock and then the delivery was very quick and securely packaged.
    This is a fantasticly strong machine and it just chugs through heavy material. Great build quality - wish I knew about it years ago!
    Some great Singer videos o YouTube for this product too!

    Review by from Ireland on

  5. By Lesley S

    Overall rating
    When I first took this machine out of the box, I felt disheartened as it was so light. I didn't think it would be powerful enough for what I want.
    Wow, how wrong was I. It might be light, but its a powerful, smooth operating sewing machine.
    Highly recommend.

    Review by from Hampshire on

  6. By Kathryn P

    Overall rating
    My old singer 'died' and i decided to order a better heavier duty one. I ordered on Friday afternoon and it was delivered just after lunch on Sunday. Amazing service! The new machine is excellent and surprisingly easier to use than the old basic one. Delighted with it.

    Review by from Stafford on

  7. By Nettie S

    Overall rating
    Absolutely love this machine, stitches really well and is a great buy.

    Review by from Thornhill on

  8. By Mjm R

    Overall rating
    Extremely pleased as I originally ordered one on amazon only to find it was an import and had to send it back. This exact machine ended up costing less and only draw back I find is the foot could lift a bit higher to allow thicker materials.

    Review by from Lincolnshire on

  9. By Gill Y

    Overall rating
    Delighted with the delivery time, especially as this was during the early days of the Covid-19 lockdown! I am completely new to sewing but am slowly getting familiar with my new Singer 4423 and am happy so far, sew good!

    Review by from Glasgow on

  10. By Rita N

    Overall rating
    I have recently received delivery of my Heavy Duty Sewing Machine and I am very pleased with the results so far. Repairing Jeans has never been easier as the machine effortlessly sews over thick seams. Like others I am also finding the automatic needle threader tricky to get used too. Hopefully I will get the hang of this soon. Delivery was on time and very helpfully gave us and hour window when to expect the arrival of the machine.

    Review by from Lincolnshire on

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FREE deliveries on all sewing machines within the UK mainland excludes highland, Islands and weekends.

Under £30 - delivery starts at 0.99p (weight/size dependent)

Over £30 - delivery is free in UK mainland

Small Items:
We use Royal Mail post for all small/med packages which are sent out same day where possible if ordered before 1 pm.
Usual delivery timescale 2-4 days. (7-14 days Airmail outside the UK)

Larger Items: Sewing machines, overlockers.
Free UK main area next working day insured delivery.

We use DPD, UPS, UK Mail and Parcel Force with pick-ups twice a day. UK next working day delivery for large items which are usually shipped the same day where possible if ordered before 3pm. 

  • We can deliver on Saturday or Sundays as well as any week day.
  • And with a 15 minute delivery time slot.

There could be delays caused due to circumstances beyond our control but we will do what we can to limit these and ensure you get your order as quickly as possible. 

Non standard & further detailed delivery information for europe or worldwide can be found here. All delivery time-scales are given as a guide only.