Bow in Parallel Clamp Bar - Is it a Problem?

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Forum topic by gtbuzz posted 08-09-2013 05:46 PM 1046 views 0 times favorited 6 replies Add to Favorites Watch
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427 posts in 2642 days

08-09-2013 05:46 PM

I just bought some 50” Bessey Revo clamps from Lowe’s and was able to get them delivered for no charge. When the delivery guy dropped them off, the dropped some of them on my porch. Clamps seemed to be okay, but it did make me inspect them a little carefully just in case. I noticed that 2 of the ones I got have a slight bow in the bar (pictured). I know the delivery guy didn’t cause it, there’s really no way. Likely something from the factory or maybe the way Lowe’s was storing these things. It’s minor, but I can’t seem to convince myself either way if it’s going to be an issue. Anyone have any idea? Should I exchange them or is it a non-issue?

I haven’t measured it exactly, but it’s about 1/8” of an inch over the 50” span. It seems to me that for clamping operations, the bar is going to be under tension, so it’ll get straightened out anyway. For spreading though, the bar is under compression and I wonder if the fact that it’s already a little cockeyed is going to make things worse.

6 replies so far

View PurpLev's profile


8547 posts in 3849 days

#1 posted 08-09-2013 05:57 PM

it’s actually the other way around – when clamping the bars will be under compression, when spreading they will be stretched out.

I would personally try to give it a little counter-bend to see if I can fix it myself first (lightly – wouldn’t want to induce any worse effects on those), if that works, all done – if not, I would take it to loews for replacement with receipt.

-- ㊍ When in doubt - There is no doubt - Go the safer route.

View Loren's profile


10477 posts in 3848 days

#2 posted 08-09-2013 06:54 PM

I think it would probably work just fine, but I’d take it back
for an exchange personally. In a used clamp I might try
straighten it a bit.

I have never looked at my bar clamps to assess the
bar straightness. For all I know, I have some bent ones,
but I’ve never had trouble with clamping if so.

View SCOTSMAN's profile


5849 posts in 3785 days

#3 posted 08-09-2013 07:50 PM

Change them right away besseys are too expensive to muck about with they should be perfect I bought some besseys and some bessey clones which ( the clones) all dissintegrated when first used I was lucky to get my money back I still have the metal work sitting in the shop somewhere.MY 2 CENTS Alistair

-- excuse my typing as I have a form of parkinsons disease

View kdc68's profile


2691 posts in 2477 days

#4 posted 08-09-2013 09:34 PM

+1 Alistair.....these are $50.00 each at my local Lowes, if it were me I’d exchange them ASAP…

-- Measure "at least" twice and cut once

View NiteWalker's profile


2738 posts in 2777 days

#5 posted 08-09-2013 11:08 PM

+1 for swapping it out. Bessey commands higher prices for a reason, so at their prices I expect perfection.

-- He who dies with the most tools... dies with the emptiest wallet.

View firefighterontheside's profile


19432 posts in 2057 days

#6 posted 08-10-2013 01:47 AM

Gtbuzz, you’re right about the compression/tension, so it probably would not matter at least for clamping. On the other hand you just bought expensive clamps and if you want straight ones you should have them.

-- Bill M. "People change, walnut doesn't" by Gene.

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