Model and function comparison
bernette b42 vs b44 vs b48 FUNLOCK: coverstitch, overlock or both
Three-machine function comparison
The bernette 42, 44 and 48 FUNLOCK names describe three different finishing plans: coverstitch, overlock, and a combination. Their published stitch counts are less useful than asking whether the raw edge should be cut, whether a hem should avoid cutting, or whether you need both operations from one machine.
Choose the operation before the stitch count
The b44 FUNLOCK is the family’s overlocker. It has 15 overlock formations for two-, three- and four-thread edge finishing, including rolled hem, flatlock and super-stretch approaches. Its knife trims the seam allowance as the loopers wrap the edge. If raw-edge finishing and knit seam construction are the routine, that focused setup may be enough. It does not create the parallel-needle coverstitch used for hems across the top of a T-shirt.
The b42 FUNLOCK moves in the other direction. It is a coverstitch machine with three coverstitch formations and a separate two-thread chainstitch. Its two cover widths are 2.8 and 5.6 mm. It sews hems, cuffs, bindings and selected decorative seams without the overlock knife trimming the edge. It does not replace an overlocker for one-pass cutting and finishing. The chainstitch is a looper-threaded formation, not a normal locked straight stitch; the manual explains how to secure its end.
The b48 FUNLOCK combines both main finishing families and adds four combo patterns. The current U.S. page groups its 23 formations as 15 overlock, three coverstitch, four combo and one chainstitch. That breadth can reduce the number of separate finishing machines, but it does not remove mode changes. Overlocking and coverstitching need different needle positions, thread paths and knife or insert settings. Expect to set up the selected chart rather than press a button to convert the machine.
Where the range is useful—and where it stops
All three use foot controls, color-coded threading, LED lighting, differential feed and ELx705 needles. The b42 and b48 list 87 mm to the right of the needles; the b44 lists the same working clearance to the right of its needle. Their 2023 English manuals list maximum speeds of 1,300 stitches per minute, but that is a published machine maximum, not a separate speed limiter. These shared features do not turn the machines into general-purpose sewing machines. Keep a regular lockstitch machine for standard seams, zippers and buttonholes.
Use the questionnaire by identifying the essential task. An overlock requirement points to b44 or b48. A no-cut coverstitch requirement points to b42 or b48. A chainstitch task is documented for b42 and b48, while the b44 does not offer a standalone chainstitch mode. Asking for a broad “machine with many stitches” obscures these important differences. If you need coverstitch and overlock but expect very few changes, compare the extra b48 setup with the simplicity of dedicated b42 and b44 stations.
Packages and work habits matter, too
The b44 package is built around overlock work: its standard foot, upper-looper converter, spare upper knife and cut-offs bin support the cutter-and-looper system. The b42 package centers on a coverstitch foot and chain/cover path tools, with no cutting bin in its standard list. The b48 page lists both the overlock/cover foot and a cover/chainstitch insert, plus the cut-offs bin and upper-looper converter. For all three, ask the seller to verify the actual package when the box is used, open or missing components; a manufacturer’s image is not a package checklist.
Manual setup is part of the ownership routine. Each model has a different chart: do not transfer b44 overlock settings to a b42 coverstitch hem. The b48 changes the configuration when switching functions. Test the chosen formation on the same fabric and thread, adjust differential feed and tension in small increments, and secure coverstitch ends as the manual directs. The overlock machines produce knife trimmings; all three manuals call for unplugging before cleaning and removing lint with a dry brush. Follow each model’s lubrication points and use sewing-machine oil only as instructed.
A sensible purchase decision
Choose b44 for a dedicated serger and raw-edge finishing; choose b42 for dedicated coverstitch hemming; compare b48 when you genuinely expect to use both modes and the additional configuration work is acceptable. The current product pages and linked manuals establish these functions, but they do not establish the stock or condition of an individual dealer’s box. Read the exact model assessment for its package and setup notes before comparing offers.
Sources: bernette’s current b42, b44 and b48 U.S. product pages and their model-specific English manuals.