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TBH-1790S Electronic Straight Button Hole Sewing Machine
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Product: Views:448TBH-1790S Electronic Straight Button Hole Sewing Machine 
Brands: TBH-1790S
Unit price: Negotiable
Delivery date: Since the payment date Days delivery
Valid until: Long-term effective
Last updated: 2017-08-25 09:00

TBH-1790S/K/SL Electronic Straight Buttonhole Sewing Machine

Oil-free clean sewing

Multi-function operation control panel

Simple and convenient operation,simple and accurate orientation

New pulling thread-slacking device (which has been applied for the national patent)

New base thread and surface thread cutting device (which has been applied for the national patent)


TBH-1790S Electronic straight button hole machine (for Standard material)       

TBH-1790K Electronic straight button hole machine (for Knitting material) 



TBH-1790S (Standard)

TBH-1790K(knitting type)

TBH-1790SL(long type)

sewing speed

the highest;4.200rpm in common use;3600rpm ;3300rpm while using no-refueling rotating shuttle(selected and purchased);3300rpm

needle bar stroke


size of cutter


with of noose

 the maximum 5mm(parts with special specification:the max.10mm)

length of keyhole seam

 the maximum 41mm(parts with special specification:the max.120mm)

needle thread tension

tension of clamping (electric line tension unit)

mount of stitches

 size of keyhole is calculated automatically via sewing distance.

machine needle(equipment model while delivered)


original type

DP full-rotating shuttle  Refueling free shuttle (optional)

rising volume of foot presser

14mm (Reversing side)

automatic lifting and pressing foot device

stand equipment (pulse motor type)

drive mode of needle sewing

Pulse motor drive

drive mode of feeding

pulse motor  intermittent feed

drive mode of cutter

Multi motion magnetic drive

number of standard pattern

30 patterns

number of memorable pattern

99 patterns at most

coiling device of down thread

head built-in

drive model of machine head

small AC servo motor(direct drive)

electricity/electricity consumption

(single phase)220V~240V/1000VA

refuel mode

Microsca leg refueling in parts with rotating shuttle  no-refueling while using No-refuelin rotating shuttle(selected and purchased)

engine oil

parts with rotating shuttle :engine oil(equals to ISO Vg7)



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