High Precision Cylinder Long Hole Drilling and Boring Machine

Product Description

High Precision Horizontal Long Hole Drilling and Boring Machine For Round Bar
DB-250 DB-250A

Machine Summary:
*This machine is specially designed for deep hole processing of cylindrical workpiece.
*It can perform different processing, such as drilling, boring, expanding and roller burnishing, etc. *Besides machining through-hole, it can also process step hole and blind hole.
*The machine tool is suitable for production of special cylinder, coal cylinder, hydraulic machinery, high pressure boiler tube, petroleum, military, electrics and airspace, etc.

Performance and Features:
*The process adopts the mode of workpiece rotating and tools feeding, if necessary the tool can be also rotary. With the workpiece rotating and the tool feeding.
*The cutting fluid reaches the cutting area by oil supply device or through boring bar end, the chip removal adopts BTA type. When boring, cutting fluid pushes chips forward out of headstock end.
*The machine can be equipped with drilling box, achieving double rotation of workpiece and tools, and the single action is also available for meet the different processing demand. Under the conditions of lower speed rotation of the workpiece, the processing efficiency and quality can be assured.
*The machine has a wide application according to different processing demand.
*DB-250 is equipped with workhead box, but isn't equipped with boring box or drilling box; DB-250A add to boring box or drilling box on the basis of the DB-250, so higher efficiency machining deep hole for cylindrical workpieces.
*The machine consists of bed body, headstock, drilling and boring box (optional), chuck body, feed carriage, oil feeder, cooling system, chip removal device, steady rest, hydraulic system, boring bar support, motor and electrical system, etc.

Technical Parameters

Specifications	Units	DB-250	DB-250A
Drilling diameter range	mm	Φ30-Φ100	Φ30-Φ100
Boring diameter range	mm	Φ40-Φ250	Φ40-Φ250
Boring depth range	mm	1000-12000	1000-12000
Workpiece clamping dia. range	mm	60-350	60-350
Spindle center height	mm	350	350
Headstock spindle hole dia.	mm	Φ75	Φ75
Spindle front taper hole dia.	mm	Φ85 1:20	Φ85 1:20
Spindle speed range	r/min	60-1000(12 steps)	60-1000(12 steps)
Drill box spindle hole	mm	-	Φ75
Drill box front taper hole	mm	-	Φ85 1:20
Drill box speed range	r/min	-	40-670(12 steps)
Feed speed range	mm/min	5-1000 (stepless )	5-1000 (stepless )
Feed carriage fast moving speed	m/min	2	2
Main motor power	kw	30	30
Hydraulic pump motor power	kw	1.5	1.5
Carriage rapid motor power	kw	3	3
Feed motor torque	N.m	3.7	3.7
Cooling pump motor power	kw	5.5(4 groups)	5.5(4 groups)
Cooling system rated pressure	MPa	2.5	2.5
Cooling system flow	L/min	100, 200, 300, 400	100, 200, 300, 400
Hydraulic system rated pressure	Mpa	6.3	6.3
Max. axial force of oil feeder	KN	6.3	6.3
Max. clamping force of oil feeder	KN	20	20

Packaging & Shipping
Firstly packed by waterproof cloth and then in wooden case.
Few parts may need to be taken down and be packed in wooden case.
According to customer's different require, wo can adopt different packaging.
Whether CNC deep hole honing machine or CNC deep hole drilling and boring machine or CNC deep hole skiving roller burnishing machine, we all use the same standard Packagings.
Our Advantages
1. Free replacing parts available in the warranty period. Cost price replacing parts available beyond the warranty period.
2. Quick action and reply for the technical questions at any time in the whole life of the machine.
3. Overseas after service center available in some region.
4. Engineer overseas service available on the requirement of customer(relative cost born by customer).
Packaging & Shipping
Company Profile
Timeway Machine Tool Co., Ltd. is a professional machine tool manufacturing enterprises, the main products include lathe, milling machine, grinding machine, etc., and according to customer needs we also can design and manufacture various special purpose machines, to provide relative technology upgrading and transformation services in machine tool field.
Since the establishment of the Ministry of Foreign Trade, we have participated in various domestic and international exhibitions such as the Autumn Canton Fair, Beijing Exhibition, Shanghai Exhibition, Moscow, Ethiopia, and Russia, and have maintained long-term friendly cooperative relations with exhibition customers.
Customer visited
So far, we have received many customers from abroad, and they are all very satisfied with our company and products
The following is one of the most satisfactory products recommended by customers, as well as our main product categories. you can click and view

Conventional Lathe	CNC Lathe	CNC Machining Center	CNC Milling Machine
Grinding Machine	Milling Machine	Special Use Lathe	Boring Machine

FAQ
Q: Why choose TIMEWAY MACHINE?
A: 1 . High quality with competitive price;
2 . Professional R&D team and 25 years export experience;
3 . Exported more than 60 countries;
4 . CE, ISO Certificates;
5 . 24 HOURS ONLINE SERVICE (SKYPE, WhatsApp, Wechat, Trademanager);
6 . 12 months quality warranty;
7 . Oversea engineers available for problem resolving;
Q: Do you have QC or any safety standards for your machinery?
A: yes, we have established a highly strict quality control department to guanrantee good quality.
Q: What's the MOQ?
A: 1 set (Only some low cost machines will be more than 1 set )
Q: What about the payment terms?
A: (1) T/T with 30% advanced payment, and 70% balance payment to be paid before shipment;
(2) Irrevocable LC at sight;
(3) Western Union, MoneyGram, etc.
Q: How about the warranty?
A: Warranty Period is one year after delivery. Even beyond the period, we will supply lifetime service for machine.