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Thern Vertical Lead Block
Thern Vertical Lead Block
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Quick Overview:
- Pulley block
- Used to change direction of rope
- For use with wire rope winches
- Select model from 1/4" to 1/2" rope size
- Two year warranty
- Meets ASME B30.26
- Powder coated finish
- Cable keepers on top and sides of sheave
Customers Also Bought
Thern Vertical Lead Blocks offer a secure and easy way to change the direction of a winch rope and are commonly used in applications where the winch is awkwardly positioned or a line needs to feed around/over/under an obstacle.
Offering rope capacities up to 1/2", the Thern lead block meets even heavy-duty lifting and pulling applications.
Stay confident when not under load- with many other pulley blocks the rope can easily slip out and cause an accident, with the Thern Lead Block the rope is kept in the pulley by 'Cable Keepers' on the top and sides of the sheave.
- Up to 7000 lbs Line Load
- Cable Keepers on Top and Sides of Sheave
- Five Sizes for Different Rope Diameters
- Sealed Needle Roller Bearing with Grease Fitting
- Durable Powder Coat Finish
- Design in Accordance with ASME B30.26
- Two Year Warranty
- VLB-G25 — for 1/4″ Rope
- VLB-G31 — for 5/16″ Rope
- VLB-G38 — for 3/8″ Rope
- VLB-G44 — for 7/16″ Rope
- VLB-G50 — for 1/2″ Rope
Specifications by Model
MODEL NUMBER | SHEAVE OUTER DIAMETER (INCHES) | ROPE DIAMETER (INCHES) | TOTAL WORKING LOAD LIMIT. R (LBS) | LINE LOAD LIMIT. L (LBS) |
---|---|---|---|---|
VLB-G25 | 4 1/2 (114 mm) | 1/4 (6 mm) | 4000 (1814 kg) | 2000 (907 kg) |
VLB-G31 | 6 (152 mm) | 5/16 (8 mm) | 6000 (2722 kg) | 3000 (1361 kg) |
VLB-G38 | 7 (178 mm) | 3/8 (10 mm) | 9600 (4354 kg) | 4800 (2177 kg) |
VLB-G44 | 8 (203 mm) | 7/16 (11 mm) | 11600 (5262 kg) | 5800 (2631 kg) |
VLB-G50 | 9 (229 mm) | 1/2 (13 mm) | 14000 (6350 kg) | 7000 (3175 kg) |
Factor = Total Load/Line Load
ANGLE (DEGREES) | FACTOR |
---|---|
0 | 2.00 |
10 | 1.99 |
20 | 1.97 |
30 | 1.93 |
40 | 1.87 |
45 | 1.84 |
50 | 1.81 |
60 | 1.73 |
70 | 1.64 |
80 | 1.53 |
90 | 1.41 |
100 | 1.29 |
110 | 1.15 |
120 | 1.00 |
130 | 0.84 |
135 | 0.76 |
140 | 0.68 |
150 | 0.52 |
160 | 0.35 |
170 | 0.17 |
180 | 0.00 |
Mounting Fasteners
VLB-G25 | 7/16 Inch Grade 5 min or M12 grade 8.8 min |
VLB-G31 | 1/2 Inch Grade 5 min or M12 grade 8.8 min |
VLB-G38 | 5/8 Inch Grade 5 min or M16 grade 8.8 min |
VLB-G44 | 3/4 Inch Grade 5 min or M20 grade 8.8 min |
VLB-G50 | 3/4 Inch Grade 5 min or M20 grade 8.8 min |
Frequently Asked Questions
see all faqsCan I order from outside of the US?
Absolutely, our solid relationships with freight agents, couriers, and international airlines make it easy.
You can easily order goods from LES USA for delivery outside of the United States. Our network of global logistics partners deliver to almost every corner of the planet. Buy online internationally or contact our export department for a quotation.
Did you know you can purchase Tax-Free if you are outside of the USA? See 'Can I use a Resale Certificate?'
When will I get my goods?
All of our product listings show an "Estimated Lead Time To Dispatch" and the delivery transit time is determined by the service you opt to select in the checkout.
Our aim is to deliver products throughout the United States fast and efficiently. Our website clearly displays "Estimated Lead Time To Dispatch" for every item, this is the time it takes to prepare the item for shipment. When you arrive at the 'Checkout' you are able to select the desired shipping service such as "Standard Ground Shipping 2-3 days".
If the product "Estimated Lead Time To Dispatch" is 2-3 days and you selected "Standard Ground Shipping 2-3 days" service you can expect that your order will be delivered within 4-6 days from the point of order.
For international orders, delivery times may differ, see our Shipping page
Can I use a resale certificate?
You can use a resale certificate when purchasing from LES USA.
We accept most re-sale certificates from customers who are genuinely purchasing the product with the intention to re-sell. Our team will perform the necessary reasonable due diligence required to confirm that the items will be resold.
When shipping outside of the United States sales tax can be refunded if you are able to provide us legitimate evidence that the goods have been exported outside of the USA, alternatively, we can avoid adding sales tax initially by having LES handle the export and shipping of the goods outside of the country.
Do I get a certificate with my item?
Yes, if applicable.
If applicable we will provide you with the necessary documentation/certification required for your products purchased from LES.
Can you price match or beat an existing quote?
We always do our very best!
When it comes to pricing LES strive to be competitive and this means that we will always offer a fair price. Should you find an item cheaper elsewhere prior to your purchase let our team know here and we will do our very best to do better.