PreAsion®
2 in 1 Portable CNC Boring and Welding Machine

110V Boring Welder Engineering Machinery Repair Equipment
　

Construction machinery boring machine is used for post-welding processing of shaft pin holes, rotary holes and hinged holes on various construction machinery structures, or inserting sleeves after reaming. Repair and machining of concentric holes such as excavators, loaders, presses, cranes, etc.

The boring machine is installed by welding and bolt connection, which is convenient for disassembly and transportation.

The boring machine is suitable for the processing of various concentric holes and side-by-side holes. The work is continuous cutting, with high production efficiency and high machining accuracy.

　
Parameter:

　

◆ Control mode: manual/automatic

◆ Application: Boring, repair welding inner hole

◆ Main motor power: 2.35KW

◆ Feed motor: torque 40Nm (gear transmission) torque 8.5Nm (worm gear)

◆ Voltage: 110V 50/60HZ

◆ Working stroke: 260mm

◆ Main engine speed: 0-390r/min

◆ Boring diameter: 55-300mm

◆ Feeding speed: stepless speed regulation

◆ The maximum amount of knife cutting on one side: 3mm

◆ Repair welding diameter: 50-300mm

◆ Machining roughness: Ra3.2

◆ Machining hole roundness: ≤0.02mm

　
Item Included:(022733)
　

2 in 1 Portable CNC Boring and Welding Machine 110V Engineering Machinery Repair Equipment

　

Shipping & Handling Details

Default Shipping Cost or Free Shipping Information: 
▲ Default shipping cost or free shipping service is only for the lower 48 United States by UPS Ground or USPS. Other areas or needs other shipping ways, please contact us.
 ▲ Buyers from Guam, Puerto Rico, Virgin Islands, American Samoa, Alaska, Hawaii, PO Boxes, APO/FPO addresses or other countries/areas, there WILL be extra shipping costs, please contact us for more detailed information.
 ▲ Please make sure your address is valid for both UPS and USPS services. Any costs incurred because of incorrect or undeliverable address should be undertaken by buyer.

Handling Time: Shipping is usually made in 1-3 business days after payments cleared. Orders are processed from Monday-Friday; Not on the weekends & public holidays.

Sales tax / Customs duties: Any sales taxes or Customs duties are not included. If came out, they must be undertaken by the buyer. Sales Tax of 8% will be applied for orders shipped within the state of California.

Damage In Shipping: Email or call us First! We will work with you to get the case resolved in the fastest method.

Return / Refund

If you are not 100% happy with your purchase, please contact Us. Please don't directly opened a request or case without informing us, or else, we will do some discounts on the warranty and other sales-services later on. Hope for your understanding.

Returns & Exchanges

▲ All returns must be made within 30 days of delivery date. Items must be in new, unused condition, with all original materials included with the shipment. A partial refund may be applied for opened or damaged items, depending on the condition.
 ▲ Items returned under the buyer’s remorse: The return shipping fee must be covered by the buyer; The original shipping cost will also be deducted from the refund. 15% restocking fee of the items purchase price will be charged. 
▲ Returns that are the result of our seller's error: Buyer will receive a full refund of the item as well as shipping charges
▲ All returns require a RA (Return Authorization) number that will be given by our seller. Please contact with us at first for more details.

Defective & Damaged Products 

 ▲ If product was received damaged or not as described, please send us some pictures or videos, so we could well understand your problem, then solve  them for you ASAP. Besides, it's much helpful for us to claim with UPS,  remind our related department to pay much more attention to packaging  later on. Hope for your understanding.
 ▲ Replacement or refund of defective or damaged products can only be returned in exchange for the exact same product, or else, the purchase price will be refunded back to your original payment method. 
 ▲ If an item is received damaged, customer service must be contacted within 7 days of receiving your item. All returns require a RA (Return Authorization) number as above.

Payment

eCheck Issues: Payments via eCheck do not clear immediately. Usually you will wait 5-7 days after checkout for it to clear. Then we will arrange shipments for you.

Warranty & Feedback
▲ 6 months' warranty for the machines, not for the consumables. We stand behind our products all the item, so even if your warranty period has expired, you can still seek for service or technical support from us with low cost.
 ▲ Any warranty shipping cost to us is responsible by buyer.
 ▲ Any shipping cost to buyer is responsible by the seller. 
▲ We committee to the customer satisfaction and want to bring you the best purchase experience. If there is any problems, please contact us ASAP. If not, please leave us a positive feedback as it's very important for us. Thanks very much.

On Oct 28, 2025 at 19:12:18 PDT, seller added the following information:

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