SainSmart Rechargeable Stainless Steel Screwdriver
SainSmart Rechargeable Stainless Steel Screwdriver
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Product Description
The portable, light, and compact rechargeable screwdriver by SainSmart is about the length of a standard pen and has a motion control function, which automatically recognizes the direction you want to turn your screws. Made of 304 stainless steel, this rechargeable screwdriver functions using a planetary gearbox, a high-speed electric motor, and an embedded microprocessor with a velocity sensor ... Read More

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Clarid
136
Jun 23, 2019
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I could have easily missed it, but does this happen to measure torque specifications to ensure a screw is properly tightened?
Jun 23, 2019
egulk2000
3
Jun 23, 2019
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Jun 23, 2019
SAVAGEzx
6
Apr 10, 2019
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for those confused by the torque stats between the two....  How To Choose Between ES120 And ES121? If you want faster speed, we suggest you choose ES121. If you want larger torque, we suggest you choose ES120.
(Edited)
Apr 10, 2019
MeanEYE
373
Apr 17, 2019
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Difference is not as big as you'd think. Take a look at this review which measured torque. In summary ES121 has only 25% less torque at almost 2x the speed. So ES121 is indeed upgrade since it has more ball bearings to compensate for axial forces and similar.
(Edited)
Apr 17, 2019
edvorg
2
Mar 3, 2019
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I bought this on banggood for twice lower price.. also it broke after a week of use
Mar 3, 2019
MeanEYE
373
Apr 17, 2019
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Miniware, company which makes these products SainSmart seems to be rebranding, produces good quality products, but you can't find them much lower than what is offered here. Certainly not at half of the price. To me it sounds like you ran into fake or lower quality product impersonating this one.
Apr 17, 2019
jantari
153
Jan 5, 2019
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No USB Type-C in 2019 is an instant no-go. Just stop with microUSB. J U S T S T O P
Jan 5, 2019
RED-404
206
Feb 15, 2019
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Stop with the current year crap. It's asinine and meaningless. J U S T S T O P Though I'm totally behind the USB Type-C part.
Feb 15, 2019
jzen0
165
Jun 24, 2019
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How is mentioning the current year or basically the fact that these are 10+ year old connectors asinine and meaningless?
Jun 24, 2019
MichaelAtOz
68
Jan 2, 2019
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Here is the diff: ES120/ES121 Price: $90/$110 No-load speed: About 270 rpm/380 rpm = 4.5 rps / 6.33 rps Maximum torque: 30 kgf.cm (manual mode) / 1.5kgf.cm Gearbox: integrated planetary gearbox 1:144 / 1:64 That max torque difference doesn't seem to match the gearboxs, I'm wondering if the ES121's is non-(manual mode). Anyway, when they manage to add LEDs I'll think about it...
Jan 2, 2019
SaskAudioGuy
273
Feb 16, 2019
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Actually the big difference between the them is the electronic torque and the free speed. ES120: 2.8kgf.cm and 270rpm using a 1:144 gear box reduction ES121: 1.5kgf.cm and 380rpm using a 1:64 gear box reduction Everything else seems to be identical, both have a maximum rated manual torque of 30kgf.cm and use the same 25,000rpm motor. Like you said, but their electric drive torque numbers being the same made no sense. I went to the Alibaba and bang good to get the numbers from the 'updated' versions of both. The ES120 update is likely to do with a new bearing setup for the locking clutch.
(Edited)
Feb 16, 2019
rcombs
0
Nov 26, 2018
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So the ES121 is faster, but lower-torque, due to the lower gear reduction ratio. Anyone know what the difference between the ES121 (sold here) and the ES121V (available from SainSmart) is?
Nov 26, 2018
LineNoise
30
Jan 2, 2019
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ES121 takes hex bits where as the ES121V takes 800 Type winged bits.
Jan 2, 2019
JA_MAN
70
Nov 24, 2018
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When is the rechargeable hammer coming?
Nov 24, 2018
Clarid
136
Jun 23, 2019
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Don't be obtuse, everybody knows that kind of technology will not be arriving within our lifetime 😏
Jun 23, 2019
Daed
569
Aug 10, 2018
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For those of you comfortable with ordering from the Far East, Banggood has this (ES121 model) on a "flash sale" for US$86 with free shipping. Sale lasts another 2 days. https://www.banggood.com/Upgraded-MINI-ES121-Electric-Screwdriver-Smart-Repairtools-Built-in-STM32-Chip-OLED-with-Screwbits-p-1258406.html?rmmds=search&cur_warehouse=CN
You can choose between Chrome and Stainless finishes (I think MD is only offering stainless), and I haven't compared the included bits.
Aug 10, 2018
xboost
7
May 21, 2018
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A review of the ES121: https://youtu.be/by1Bya5Y4ns
May 21, 2018
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