SKU: 35723769694

Large Pulley With Universal Clamp

Sale price$29.25 Regular price$32.50
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Ships within 48 hours · Estimated delivery Aug 13 - Aug 18

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Description

Large Pulley With Universal ClampLarge Pulley Universal Clamp The Large Pulley with Universal Clamp is a new addition to the Science Equip Lab Supply range designed for maximum versatility in physics and science labs. The 70mm diameter plastic pulley rotates smoothly on its metal mounting bracket, giving clean cord tracking for force, motion, and mechanics experiments. The universal clamp mechanism accommodates two distinct setups: clamped directly to a bench edge (up to 38mm thick)

Large Pulley Universal Clamp

The Large Pulley with Universal Clamp is a new addition to the Science Equip Lab Supply range — designed for maximum versatility in physics and science labs. The 70mm diameter plastic pulley rotates smoothly on its metal mounting bracket, giving clean cord tracking for force, motion, and mechanics experiments.

The universal clamp mechanism accommodates two distinct setups: clamped directly to a bench edge (up to 38mm thick) or clamped around a vertical support rod (up to 13mm diameter), such as a retort stand or boss head rod. No tools needed to switch between configurations.

Key features

  • Large 70mm diameter plastic pulley — optimised for smooth string and cord travel
  • Precision metal universal clamp — durable for repeated classroom use
  • Bench mount: fits bench edges up to 38mm thick
  • Rod mount: fits support rods up to 13mm diameter
  • Two-in-one mounting — switches between bench and rod without tools
  • Compatible with retort stands, boss heads, and standard lab support rods
  • Ideal for force & motion, Atwood machine, and pulley system experiments

Typical applications

Atwood machine

Redirect hanging masses over the pulley groove for acceleration and force experiments.

Pulley systems

Combine multiple pulleys (bench and rod-mounted) to build single and compound pulley rigs.

Force & motion

Change direction of applied force in Newton's Laws demonstrations with masses and strings.

Inclined plane

Mount on a retort stand to route string over an inclined surface for angle and friction experiments.

Specifications

SKU SE.MS0344-01
Product name Large Pulley with Universal Clamp
Pulley diameter 70mm
Pulley material Plastic
Clamp material Metal
Max bench thickness 38mm
Max rod diameter 13mm
Mounting options Bench edge or vertical support rod
Tool required No — tool-free adjustment
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 35723769694

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4.1 ★★★★★
Based on 13 reviews
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Verified Purchase
ariel brammer
Boise, US
★★★★★ 5
Cute but one is broken
Color: Brown, Size: 35.7"W x 10.3"D x 1.8"H, Set of 2, Color: Brown, Size: 35.7"W x 10.3"D x 1.8"H, Set of 2
Update: they sent me new ones and they seem to be holding up, thank you! I really wanted to love these but one of them came bent so I can’t use it because I’m worried it’s going to ruin the wall. It’s slanted so far down but the one that didn’t come bent works great and looks really cute
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 7, 2026
R
Verified Purchase
R
Natrona Heights, US
★★★★★ 5
A birthday gift that made someone happy.
This was bought as a birthday gift, good quality, very sturdy, and the recipient loved it highly recommend this product.
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Reviewed in the United States on April 25, 2026
S
Verified Purchase
S.landia_Librarian
Draper, US
★★★★★ 1
Issues with mounting the shelves, big time
Color: Brown, Size: 55.1"W x 10.3"D x 1.8"H, Set of 2
I bought the 55 inches floating shelves. I have an area above my linen cabinet that I wanted to utilize for storage and books in my hall. I did my measuring, figured out spacing. Marked everything off to do 3 total shelves (bought two boxes). A couple of spots screwed into a stud, and the others I had to install the plastic mount things. I had used those before so I just did the predrill then tapped them in, finished off by screwing the mount flush with the wall. I grabbed the first bracket and decide to start with a screw that had one of the inset mount things (sorry the correct term is escaping me). It never once occurred to me to check that the plastic mount and screw would not work. We’ll surprise! I tried and tried to get the screw to screw thru the mount, the mount is the rigid plastic thoe that is supposed to split when the screw goes through. Well something wasn’t engineered properly on the mounts cuz they would not thread a screw. They would not split. I even went into my garage and tried different screws I had to see if maybe it was just too big…or something. Then I started just prying it apart and could not get it to split like it’s supposed to, the tip piece broke off before the piece split. I have never had this situation before. I now have a bunch of these, that leave huge holes in my wall, where I measured out for a shelf to go. I’m not a huge DIYer so now I’m trying to figure out if I can salvage this situation but I’m afraid that if I get different mounts they will be too small for the already created holes, or they will fit the hole but because it’s screwing into dry wall, the drywall already has threads from the other mount, will it strip if the threads aren’t 100% the same. Oooooor am I going to have to patch up and paint that wall, then buy new mounts and attempt to try again….which I will now have to set the shelves at a different height so I don’t screw into the same holes I patched since I don’t trust them…..ugh. I practically want to cry. lol. So if I could give this negative stars I would! I feel stupid due to these having such great reviews by others. Comments of how easy they were to install. I will also mention that a few others mentioned the metal bracket that is mounted to the wall then the shelf slide onto is very flimsy. I could bend it side to side with my hands. The only reason I decided it would be ok is that there are a total of 8 screws in the mount, figured it would be stable enough.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 14, 2025
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Verified Purchase
Rhonda Emmons
Carnegie, US
★★★★★ 5
Was so easy to put up.
Love it
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Reviewed in the United States on May 27, 2026
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Verified Purchase
Eric B
Port Orchard, US
★★★★★ 4
Decent Quality. Look Great
Color: Brown, Size: 35.7"W x 10.3"D x 1.8"H, Set of 2
These are easy to install and the shelf has a good quality look. The only thing lacking is the quality of the bracket. The arms are thin metal and I feel like it won’t hold much weight.
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Reviewed in the United States on December 4, 2025

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