can the rails be put end to end for twice the length if you don't mind a little bump will roller go from one rail to the next at all if lined up good.

If you don't mind a bump they can be aligned as you suggest. But for CNC use this bump can be enough to throw off the linear measurement. I think you can disconnect the round runner from the rail and stagger the joint so they will act like one long rail however there will still be a bump.

What part can I use to stop the blocks from sliding off the end of the rail?

I went to my local hardware store and bought stops. Some are in two halves others are made to slip over the bar and tighten. They come in various sizes. Look in the specialty nuts, bolts, and fasteners section.

Where can I order the carriage blocks? My order had missing blocks and I need to order.

I had the same issue. The packaging of the rails was surly inadaquate to were the block just fell out of the packaging. It happened twice since I returned the originally ordered rail system along with the second set where the blocks were missing. Finally, I ordered the rails and blocks separately. For the blocks, I ordered "4pcs SBR20UU Aluminum Block 20mm Linear Motion Ball Bearing Slide Block Match for SBR20 20mm Linear Guide Rail" from amazon here.

I need longer then 2200mm. Are there extensions available? Or are there two pieces that can be connected together available?

Hi buyer， Thank you for your time to the mail. I'm very sorry. There's no longer one than 2200mm. Hope this helps. Best wishes, Jennifer Customer Support

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VEVOR OrangeA Linear Rail 2PCS SBR20-1500mm Linear Slide Rail 4PCS SBR20UU Bearing Block CNC Kit Linear Rails and Bearings Kit CNC Rails Linear Rail Set forAutomated Machines and Equipments

Product ID: 492381641

Details

Bearing number
SBR20
Brand
VEVOR
Item dimensions L x W x H
152.4 x 5.1 x
Item weight
11.16
Material
Aluminum

📏1500mm precision rail length

⚙️4 high-precision SBR20UU bearing blocks

🛡️Chrome-plated corrosion-resistant steel

Description

⚙️ Elevate Your Automation Game with Precision & Durability!

EFFORTLESS INSTALLATION - Pre-drilled aluminum alloy rails make setup a breeze—get your CNC or automation project running faster.
BUILT TO LAST BUILT TO PERFORM - Crafted from carbon steel and bearing steel with chrome plating for unbeatable durability and rust resistance.
PRECISION LINEAR MOTION MASTERY - Experience ultra-smooth, high-accuracy sliding with industrial-grade SBR20 rails and bearing blocks.
VERSATILE AUTOMATION POWERHOUSE - Ideal for DIY CNC routers, lathes, laser welders, and industrial robots—engineer your future with confidence.
ENGINEERED FOR HIGH LOAD RIGIDITY - Optimized structure supports heavy-duty applications without compromising smooth linear motion.

The VEVOR OrangeA Linear Rail Kit features two 1500mm SBR20 carbon steel rails and four SBR20UU bearing blocks with aluminum alloy housing. Chrome plating ensures corrosion resistance and high hardness, delivering smooth, precise linear motion ideal for CNC machines, automation equipment, and industrial robotics. Easy to install and engineered for heavy loads, this kit is a must-have for professionals demanding reliability and performance.

Specifications

ASIN	B07DC2VQBN
ASIN	B07DC2VQBN
Bearing Number	SBR20
Bearing Type	Plain Bearing
Brand Name	VEVOR
Compatible Lubricant	oil-based lubricant
Customer Reviews	4.2 4.2 out of 5 stars (136)
Customer reviews	4.2 4.2 out of 5 stars (136)
Date First Available	27 December 2018
Is Discontinued By Manufacturer	No
Item Dimensions	152.4 x 5.1 x 5.1 centimeters
Item Thickness	20 Millimeters
Item Weight	11.16 Kilograms
Item model number	20-1500mm Linear Rail
Manufacturer	OrangeA
Manufacturer	OrangeA
Material Type	Aluminum
Model	20-1500mm Linear Rail
Number of Items	1
Part Number	Linear Rail
Product Dimensions	152.4 x 5.08 x 5.08 cm; 11.16 kg
UPC	601707144006

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