Bug-320 Internal and External Cylindrical Grinding Machine

Product Description

Internal and External Universal Cylindrical Grinding Machine
BG-320 BGB-320 BUG-320 BUGB-320 BG-320S BGB-320S

Performance and Feature:
*With high machining precision, the integral layout of machine tool is rational, appearance is attractive, operating handles are centralized arranged and visualization, thus to make the machine easy to control and safe to operate.
*The wheel head adopts a structure of sleeve type bearing bush hydrodynamic bearing mainshafting and features high rotary precision and high rigidity.
*The feeding guideway uses antifriction & plastic-filming guideway, thus promoting the smoothness and vibration resistance of low-speed operations.
*The hydraulic drive system uses screw pump which is of smooth running and low noise.
*BGB/BUGB(seimi-automatic) grinding machines can perform plunge-cut grinding or longitudinal grinding to conduct small-lot or batch production under the control of fixed distance or automatic measuring device.
*For the BGB/BUGB(semi-automatic) grinding machines, their grinding function and action sequences of processing cycle are controlled by programmable logic controller(PLC).
Main Accessories:
*Balancing mandrel
*Wheel balancing stand
*Three-jaw chuck(For universal machines Φ130mm)
*Internal grinding attachment(For universal machines)
*Wheel flange
*Coolant tank
*Stand grinding wheel dresser
Special Accessories:
*Closed center rest Φ10-Φ75mm
*Open center rest Φ5-Φ50mm
*Four-jaw chuck Φ160mm
*Automatic measuring device (For semi-automatic machines)
*Magnetic coolant separator

Technical Parameter

Specifications		Units	BG-320 BGB-320			BUG-320 BUGB-320			BG-320S BGB-320S
			*500 *750 *1000
Height of center		mm	180			180			180
Distance between centers		mm	520	765	1050	520	765	1050	520	765	1050
Maximum swiveling diameter		mm	Φ350			Φ350			Φ350
Maximum grinding length		mm	500	750	1000	500	750	1000	500	750	1000
Range of external grinding		mm	Φ5-Φ320			Φ5-Φ320			Φ5-Φ320
Range of internal grinding		mm	-			Φ16-Φ125			-
Maximum internal grinding depth(over 45mm)		mm	-			160			-
Maximum workpiece weight between centers		kg	50			50			50
Grinding wheel	OD.*W*ID.	mm	400*(32-50)*203
	Maximum linear speed	m/s	35			35			50
Swiveling angle of worktable	Clockwise	°	9	8	3	9	8	3	9	8	3
	Counter clockwise	°	9	8	7	9	8	7	9	8	7
Taper hole of spindle	Workhead		Morse4			Morse4			Morse4
	Tailstock		Morse4			Morse4			Morse4
Total power		Kw	6			6.6			6
Net weight		kg	2500	3000	3500	2500	3000	3500	2500	3000	3500
Gross weight		kg	3100	3600	4100	3100	3600	4100	3100	3600	4100
Overall Dimensions	Length	mm	2800	2900	3800	2800	2900	3800	2800	2900	3800
	Width	mm	2200			2200			2200
	Height	mm	2200			2200			2200

Working Accuracy

Inspection content	Sketch oftest-piece and machining condition		Inspection item	Units	BG-320 BGB-320 BG-320S BGB-320S			BUG-320 BUGB-320
					*500	*750	*1000	*500	*750	*1000
Grinding accuracy of testpiece between centers	L=350 d=35		Roundness	mm	0.0015		-	0.0015		-
	L=750 d= 75				-		0.0025	-		0.0025
	L=350 d=35		Consistency of the diameter in longitudina section	mm	0.005		-	0.005		-
	L=750 d=75				-		0.008	-		0.008
	-		Roughness	um	Ra≤0.32			Ra≤0.32
The grinding accuracy of short testpiece on chuck	L=30 d=60		Roundness	mm	-			0.0025
	-		Roughness	um	-			Ra≤0.32
The accuracy of testpiece internal grinding on chuck	L=50 d=30		Roundness	mm	-			0.0025
	L=100 d=60		Consistency of the diameter in longitudinal section	mm	-			-
					-			0.01
	-		Roughness	um	-			Ra≤0.63
Accuracy of testpiece plunge cut grinding	L=30 d=25		Consistency of batched parts diameter after grinding	Fixed distance grinding: 0.02/20 pieces Automatic measuring device: 0.01/20 pieces
	L=30 d=40

Layout Plan(Unit: mm)

Max. grinding length	A	B	C
500	1500	1800	2400
750	2100	2290	3150
1000	2500	2800	3900

The foundation depth is determined by the property of soil and should not be less than 400mm.
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.

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