Tankless Instant Wall Mounted Water Heater JW-QS7

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Loading Port:: China Main Port

Payment Terms:: TT or LC

Min Order Qty:: 100 Pieces pc

Supply Capability:: 30000 Pieces per Month pc/month

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Detailed Product Description

1/ quality steel used for housing & case.

2/ copper heat exchanger

3/ with various safety device

Features:

Model: JW-QS7 Series

* quality steel used for housing & case.

* environment-friendly coating finish if any.

* pure copper heat exchanger

* sealed burner box for high heat efficiency

* low or zero water pressure start-up

* with various safety device

* various coating color for panel optional

Specification:

Model	JW-QS7-12	JW-QS7-16	JW-QS7-20	JW-QS7-24	JW-QS7-32	JW-QS7-40
Capacity (L)	6	8	10	12	16	20
Exhaust type	forced exhaust	forced exhaust	forced exhaust	forced exhaust	forced exhaust	forced exhaust
Burner type	3 line harmonica	4 line harmonica	13 line T-shape	15 line T-shape	16 line T-shape	18 line T-shape
Ignition	automatic	automatic	automatic	automatic	automatic	automatic
Applicable water pressure (MPa)	0.02~0.8	0.02~0.8	0.02~0.8	0.02~0.8	0.02~0.8	0.02~0.8
Gas type	LPG(Liquefied Petroleum Gas) / NG(Natural gas)
Gas pressure	LPG: 2800Pa NG: 1274Pa & 2000Pa
Product size (mm)	440x290x120	520x320x140	590x330x140	620x330x180	650x420x180	700x420x180
Packing size (mm)	560x360x180	640x375x200	710x400x200	750x390x240	770x480x240	820x480x240
N.W. / G.W. (kg)	4/5	7/8	9/10.5	9.5/11	13.5/15.5	18/20

Our advantage:

1/ make products in factory ourselves.

2/ strong manufacturing capacity for OEM service.

3/ flexible production for tailor-made service to client.

Q: How to adjust the torque of disc hob commonly used in TBM?: Torque wrenches need to be used, the specific

Q: Hobbing machine hob installation angle is wrong, what will happen?Go to work in the middle of the hob stopped, and then use the manual to hob vertical movement, and then start the workpiece and why card and the card hob is bad? And the consequences?: The helix angle is not rightIn case of a sudden power failure, the insurance operation will withdraw from the workpiece manually and then start to hit the neutral and slow to the stop timeThe gear hobbing machine is a mechanical gear transmission mechanism of a certain gap exists when running to suddenly stop gear internal clearance uneven distribution, and then start the hob cutter tooth workpiece synchronization card bad.

Q: Does the forum superiors in the gear hobbing process, because the workpiece in addition to generating motion, and an attachment movement for generating helical gear so I want to ask the question is to spur gear hob, turning a lead, the workpiece will rotate (360* / gear hob the number of degrees) for helical gear hob the same rotation of a lead, because of the additional movement of the workpiece, the workpiece rotation degree will be how much? PS: suppose the hob is the same as the gear rotation: Mainly according to the size of the spiral angle and material hardness, feed speed, this is not to say, high speed, feed volume is relatively small, more than 25 degrees or slow down a little better

Q: What are the main causes of hob breaking?: The workpiece material hardness is high, the tool is not installed properly

Q: My company is using hobbing - shaving processing technology, the amount of shaving measurement, cross rod spacing and shaving teeth life size difference of 0.12mm-0.15mmThe accuracy level of the hob is related to the accuracy of the processing gear. The gears we processed require 7 levels of accuracy. The hob before each order is a class a precision, which is in conformity with the standardRecently a group of B level precision hob, no difference in other parameters, not on the bed test work, I would like to consult friends, what will the accuracy grade of hob parameters of gear, like our shaving, shaving is not able to correct these errors?: Class a hob and B grade hob as you have the final shaving process hobbing to use, both can, technically, economically speaking, B is more reasonable. If the hobbing process is finished, it should be A or AA. The tooth profile error of gear hobbing process mainly originates from the precision, accuracy, hob cutter hob and gear blank datum correction, and hobbing process accuracy, tooth pitch accumulated mainly depends on the precision of hobbing machine precision and gear blank correction accuracy. Hob different levels of error in the 0.05MM level, so instead of using B hob, shaving allowance as far as possible to stay, that is, 0.15MM can. Pay attention to the roughness of the gear surface as it was before.

Q: M6-12 recommends the use of what their hob grinding, grinding wheel, a grinding method of hob can be good recommendation, currently with 60 of white corundum grinding wheel M12 hob grinding too slowly, a grinding wheel can grind a row of hob a tooth to wear 2-3 hours, but also easy to knife sub fire! Asks God to help solve!!!: Just use CBN's grinding wheel, you can find it on Baidu and hope to help you

Q: What do you think about the cutting hob?: The thin one becomes thin Mostly uniform, and don't cut it.

Q: I produce high speed hob, M3, double headed, pressure angle 20 degrees, machined gear Z11 and Z9 gear. The normal line changes momentum 0.06~0.1 and does not dare to shave teeth. I analyze the reasons: long hob processing, less gear, gear inappropriate: in theory inappropriate. The machining tolerance is accumulated; the vibration is large; the accuracy of the hob; the accuracy of the gear hobbing machine. So far, I haven't solved it completely. But I told the gear factory to use the same hob to gear the Z43 gear, which is obviously much better. I hope you can correct me.: The accuracy of the rotary table of the gear hobbing machine is large, or the deviation of the concentricity between the small column head and the worktable is too large. The first step is to check the gear hobbing machine workbench precision spindle work station is equipped with a standard, do not try to play the top hat, mandrel, preferably with micrometer, if the mandrel in the beating of a point always hit the minimum (minimum can reach 0.003), always in 0.015~0.03 between swing dancing. Sometimes more than 0.03, the surface of the worktable shell and the surface of the cone must be overhauled. If the core shaft can be positive, it is on the top of the top, a core shaft on the two beat, normal upper and lower deviation but over 0.015, such as the top is not so, that column with the table concentricity deviation is too large, to correct the small column. That is, double headed cutter processing, less gear, gear, public wire, there is momentum, but there is no landlord said so big ah. No more than 0.03. It is also important to check the accuracy of hobbing machines and gear blanks.

Q: What is the number of hob head?: What is a single head hob? What is the number of hob heads: the number of heads (the head number or the number of teeth in the same law)Roll vortex due to vortex with a single head, double head, three head, it should also have the corresponding hob single head, double head, three points, often double or three units lack of hob can only use single head instead, how may be close to the workpiece in drawings is a technology problem.What is the fixed number: the amount of the call is only the quantitative numberIn hobbing adjustment, need to compute three gears, namely indexing hanging round I, feed, hanging wheel i: and differential gear i:. formula i_1=A_1 - Z_1/ (Z+ Z)...... (1) i_2=A_2 & f...... (2) i_3= (n - A_3 (+) /Z_1 (| Delta Z|) + /f (sin beta) / (n - m_n))...... (3) in the formula: A_1 - rolling gear machine indexing set number; A_2 rolled into a given number of gear machine; A_3 hobbing machine differential number; F hob vertical feed amount (mm/r); Z_1 - hob; Z - gear tooth number; Z supplement (micro workpiece tooth number the number of teeth), | Delta Z|

Q: On the Y3150, ready to use left gear hob hobbing left gear. How to adjust machine tools? Thank you, heroes: Left, do not use the knife back, plus the angle of the knife and the angle of the gear

With many years' experience in this field, we set up independent R & D center, testing centers, quality control centers inside factory ourselves. We carry out ISO9001 system in the company, all staffs constantly follow advanced managing & strict quality control process, quality-oriented is a constant guidance for our work here. We organize an experienced team in sales department, to ensure customers a prompt & efficient response, we are at customer's service anytime.

1. Manufacturer Overview

Location	Guangdong,China
Year Established	2008
Annual Output Value
Main Markets	South America Eastern Europe Mid East Eastern Asia South Asia
Company Certifications	ISO 9001:2000

2. Manufacturer Certificates

a) Certification Name
Range
Reference
Validity Period

3. Manufacturer Capability

a) Trade Capacity
Nearest Port	Shunde
Export Percentage
No.of Employees in Trade Department	3-5 People
Language Spoken:	English, Chinese
b) Factory Information
Factory Size:	1,000-3,000 square meters
No. of Production Lines	5
Contract Manufacturing	OEM Service Offered
Product Price Range