Socket Style Stud Pullers

[dede2897234]

Are there major differences in quality and functionality of socket style stud pullers made by Ko-ken and Snap-on versus ones made by Toptul, Assenmacher, and Neiko? I am interested in purchasing a set of Ko-ken 1/2" drive metric stud puller sockets sometime soon. Here is a picture of stud puller sockets for reference (see bottom of page): http://www.wrenhandtools.com/sockets/3-8_accessories.html.

Thanks,

Dave

 

[Danglerb]

Neiko makes cheap junk don't they?

I use a couple nuts, but I have heard about some nice tools and some not so nice thread munchers.

 

[dede2897234]

Danglerb,

Out of the three Asian manufacturers that I listed, I think Toptul would manufacture the best socket style stud puller. I have no first hand knowledge of Toptul's stud puller. I base it on the threads I have read about the quality of Toptul's other offerings such as ratchets, sockets, and wrenches.

 

[ricleh]

I have never used that type tool to remove studs. I have standard and metric sets of this collet type installer/remover and they have worked very well for me.

stud installer/remover

 

[dede2897234]

ricleh,

I noticed those collet type stud pullers yesterday on Snap-on's website. I am glad to hear that those pullers work well for you. However, the price is more than I want to spend for a set. Ko-ken sells its 4 piece metric stud remover set (6-12 mm) for about $133. I am sure that Toptul's puller set costs way less than Ko-ken's. However, I wonder if Ko-ken's pullers remove a stud with less effort as compared to Toptul???

Thanks.

 

[s14kev]

I have the 4 piece Ko-ken metric stud puller set you describe. Excellent quality and work great. From memory they are 6, 8, 10 and 12mm stud pullers in the set. Remove the stud in most cases with NO damage to threads. I was skeptical at first but the removed studs are typically reusable if you are that way inclined. Although most of the time they are coming out to be replaced anyway. The cam action ones like the snap on A36A;

http://buy1.snapon.com/catalog/item...&group_ID=1248&store=snapon-store&dir=catalog

always turn the threads to mulch. And often there is insufficient clearance around a stud to use them.

 

[dede2897234]

s14kev,

Thanks for the testimonial on the 4 piece Ko-ken metric stud puller set. I am glad to hear that they are an effective hand tool. I always wondered how well the cam action stud pullers worked too! It seems like every tool company offers one including Craftsman.

 

[dede2897234]

I had a conversation last evening with Mike Wren of Wren Hand Tools. I asked him about Toptul's 4 piece, 1/2" drive stud puller set. Mike said that the stud pullers can be used to both install (if turned in clockwise direction) and remove (if turned in counter clockwise direction) studs. He has personally used Toptul's stud pullers with great success on his motorcycle. For approximately $40 (I have yet to receive Mike's price quote), it is a good value. Ko-ken's 4 piece stud puller set is priced at $133. The previously mentioned Ko-ken set can only be used to remove studs. Ko-ken has another set to just install studs (KO4203M; priced at $90.24).

 

[rhandwor]

I have some they work fine but the cage will break if you try to impact it. I have both Stahlwille and a cheap set and they are about the same. They work fine just use them carefully. I've bought some at flea markets and put new cages in them.

 

[john w]

Question: Are these Toptul stud pullers used on studs that are screwed in or pressed in ?

 

[rhandwor]

They look just like mine for screw in studs. Do not use an impact or the cages will break.

 

[krehmkej]

+whatever on the KoKen pullers. Work perfectly. Got mine while living in New Zealand, where KoKen tools are readily available.

 

[UK Steve]

I had a conversation last evening with Mike Wren of Wren Hand Tools. I asked him about Toptul's 4 piece, 1/2" drive stud puller set. Mike said that the stud pullers can be used to both install (if turned in clockwise direction) and remove (if turned in counter clockwise direction) studs. He has personally used Toptul's stud pullers with great success on his motorcycle. For approximately $40 (I have yet to receive Mike's price quote), it is a good value. Ko-ken's 4 piece stud puller set is priced at $133. The previously mentioned Ko-ken set can only be used to remove studs. Ko-ken has another set to just install studs (KO4203M; priced at $90.24).

Ko-ken's 4100 series extractors can be used in both directions, the main difference between the Ko-ken and any others I have seen is the broaching. the Ko-ken has what I would call a double broach where the others only have a single, it's like a triangle with rounded corners, the reason Ko-ken do this is that the cage can be made far larger giving more strength (Koken do the same thing #14100 in impact quality)
As you say the four piece set is 6,8,10 & 12mm but they do from 5 to 16 in 1/2" drive, then it gets exiting, in 3/4" drive 18 to 30mm plus 1/4" to 5/8" imperial sizes.

 

[dede2897234]

UK Steve,

Thanks for your insights on Ko-ken's design of their 4100 series stud pullers. I appreciated the information on the double broach versus single broach designs. Is Ko-ken the only manufacturer of stud pullers using the double broach design? Which of Ko-ken's competitors are using the single broach design with their stud pullers?

Thanks,

Dave

 

[dede2897234]

UK_Steve,

Is it possible to use Ko-ken's stud pullers on both pressed and screwed in studs?

Thanks,

Dave

 

[UK Steve]

UK Steve,

Thanks for your insights on Ko-ken's design of their 4100 series stud pullers. I appreciated the information on the double broach versus single broach designs. Is Ko-ken the only manufacturer of stud pullers using the double broach design? Which of Ko-ken's competitors are using the single broach design with their stud pullers?

Thanks,

Dave

As far as I'm aware Ko-ken are the only company using this system, Ko-ken used to use the single broach but they had problems with the cage breaking (as do all the others) so they designed the double broach type and solved the problems of a weak cage (hence the impact version). I think what you have to look at regarding other tool manufactures is the range they do, if they make only 6,8,10 & 12 mm then chances are they come from China and that would mean single broach (Garbage)...........

Just checked the catalogue and Ko-ken have a patent on the double broach system.................end of story.......

 

[UK Steve]

UK_Steve,

Is it possible to use Ko-ken's stud pullers on both pressed and screwed in studs?

Thanks,

Dave

The way these extrtactors work is on a thread system, as you screw the extractor the stud unscrews itself, whereas on the pressed stud I'm not sure if it would unscrew or just turn in it's hole, we don't have (as far as I understand) any "pressed" studs here in the UK.
All that said, if you want a quality stud extractor then there is only one worth having and it's 100% Japanese

 

[dede2897234]

UK Steve,

Wow, you really know your stud pullers! Thanks for all the great information. You have convinced me to purchase Ko-ken's stud pullers versus its competitors! I have another set of questions for you. Are you familiar with Ko-ken's KO4211M, 4 piece stud puller set (6,8,10,12mm)? Does the 4200 series also use the double broach system like the 4100 series? Did Ko-ken make any improvements in the 4200 series? Would you recommend purchasing the 4100 or 4200 series stud pullers?

Thanks,

Dave

 

[dede2897234]

UK Steve,

If you recommend purchasing stud pullers from Ko-ken's 4100 series, which are the most important metric sizes (available sizes: 5,6,7,8,10,12 mm)? The 6,8,10,12 mm 4100 series stud pullers cost approximately $138. If I purchase every single one, I am looking at a little over $200. $200 is too much to invest all at once considering I do not currently own any stud pullers. Please advise.

Thanks,

Dave

 

[garfunkle24]

Does any one have any experience with these? Sizes are lasted as 6, 7, 8, 9, 10, 10.5, 12mm. Any info on who the OEM is would be great too.

Thanks

 

[UK Steve]

UK Steve,

Wow, you really know your stud pullers! Thanks for all the great information. You have convinced me to purchase Ko-ken's stud pullers versus its competitors! I have another set of questions for you. Are you familiar with Ko-ken's KO4211M, 4 piece stud puller set (6,8,10,12mm)? Does the 4200 series also use the double broach system like the 4100 series? Did Ko-ken make any improvements in the 4200 series? Would you recommend purchasing the 4100 or 4200 series stud pullers?

Thanks,

Dave

The 4211M is the part no for the set, the set contains 4100M-6,8,10 & 12
Ko-ken don't make a 4200 series puller.

 

[UK Steve]

UK Steve,

If you recommend purchasing stud pullers from Ko-ken's 4100 series, which are the most important metric sizes (available sizes: 5,6,7,8,10,12 mm)? The 6,8,10,12 mm 4100 series stud pullers cost approximately $138. If I purchase every single one, I am looking at a little over $200. $200 is too much to invest all at once considering I do not currently own any stud pullers. Please advise.

Thanks,

Dave

For a starter set the 4211M is perfect and includes the most popular sizes, however Ko-ken make a bigger set the 4214M this set includes a 6, 8, 10, 12 & 14mm.

 

[UK Steve]

Does any one have any experience with these? Sizes are lasted as 6, 7, 8, 9, 10, 10.5, 12mm. Any info on who the OEM is would be great too.

Thanks

Where are they listed ?

They seem to be Ko-ken sizes allthough Ko-ken's sizes are
5, 6, 7, 8, 9, 10, 10.5, 12, 14 & 16mm in 1/2" drive
then 18, 20, 22, 24, 27, 28, 29 & 30mm in 3/4" drive
then 1/4" to 5/8" imperial sizes in 1/2" drive
then 6, 7, 8, 9, 10 & 12 in 1/2" drive impact
and 1/4" to 1/2" in 1/2" drive impact.
Those are the socket type all manufactured by Ko-ken in Japan

Then they have the ratchet, type but thats a different thread.

 

[nate379]

What is a stud puller anyhow?

I have always removed studs with 2 nuts on the stud locked against each other.

 

[UK Steve]

What is a stud puller anyhow?

I have always removed studs with 2 nuts on the stud locked against each other.

If you are stripping a pair of heads to be sent for surfacing you may have upto 50 studs to remove, with a stud extractor the is done in 1/4 of the time.

 

[nate379]

This is to pull pressed in rocker studs?

 

[Merkava_4]

I noticed those collet type stud pullers yesterday on Snap-on's website. I am glad to hear that those pullers work well for you. However, the price is more than I want to spend for a set.

I've used the Snap-on stud pullers before, and yes they're pricey, but they work beautifully.