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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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

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: 67993093

Details

Bearing Number
SBR20
Brand
VEVOR
Item Weight
11.16 kg
Item dimensions L x W x H
60 x 2 x 2
Material
Aluminum Steel

📏1500mm precision length

⚙️4 high-precision SBR20UU bearing blocks

🛡️chrome-plated corrosion-resistant steel

Description

⚙️ Elevate your build with precision rails that keep you ahead of the automation curve!

SEAMLESS INTEGRATION - Includes 4 SBR20UU bearing blocks with aluminum alloy housing for effortless sliding and minimal maintenance.
ENGINEERED FOR PRECISION - 59-inch SBR20 rails deliver ultra-smooth, stable linear motion for flawless CNC and automation projects.
PLUG PLAY INSTALLATION - Pre-drilled rails and intuitive slide block design make setup quick—get your machine running faster with zero hassle.
VERSATILE AUTOMATION READY - Perfect for DIY CNC routers, lathes, laser welders, and industrial robots—join the maker elite transforming automation.
INDUSTRIAL GRADE DURABILITY - Carbon steel rails with chrome plating resist rust and wear, ensuring long-lasting performance under heavy loads.

The OrangeA Linear Rail Kit features two 1500mm SBR20 carbon steel rails with chrome plating and four SBR20UU bearing blocks housed in aluminum alloy. Designed for CNC and automated machinery, this kit offers high durability, smooth linear motion, and easy installation, making it ideal for professionals and DIY enthusiasts seeking reliable, industrial-grade linear guidance.

Specifications

ASIN	B07DC2VQBN
Bearing Number	SBR20
Bearing Type	Ball Bearing
Best Sellers Rank	#383,331 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #61 in Linear Motion Slide Rails
Brand Name	VEVOR
Compatible Lubricant	oil-based lubricant
Customer Reviews	4.2 4.2 out of 5 stars (143)
Item Dimensions	60 x 2 x 2 inches
Item Weight	11.16 kg
Manufacturer	OrangeA
Material Type	Aluminum, Carbon Steel
Model	20-1500mm Linear Rail
Number of Items	1
Outside Diameter	20 millimeters
Part Number	Linear Rail
UPC	601707144006

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