Ürün Tanımı
Ürün Açıklaması
Main Supplies:
1)housing:aluminium alloy ADC12(size 571-090) die cast iron HT200(dimension 110-one hundred fifty)
two)Worm:20Cr, ZI Involute profile carbonize&quencher warmth treatment make equipment floor hardness up to fifty six-sixty two HRC Following precision grinding, carburization layer’s thickness between .3-.5mm.
three)Worm Wheel:wearable stannum alloy CuSn10-1
Thorough Photos
Mix Choices:
Enter:with input shaft, With square flange,With IEC common input flange
Output:with torque arm, output flange, solitary output shaft, double output shaft, plastic go over
Worm reducers are obtainable with diffferent combinations: NMRV+NMRV, NMRV+NRV, NMRV+Laptop, NMRV+UDL, NMRV+MOTORS
Exploded Look at:
Ürün Parametreleri
| Previous Model |
New Model | Ratio | Center Distance | Power | Input Dia. | Output Dia. | Output Torque | Excess weight |
| RV571 | 7.5~100 | 25mm | .06KW~.12KW | Φ9 | Φ11 | 21N.m | .7kgs | |
| RV030 | RW030 | 7.5~one hundred | 30mm | .06KW~.25KW | Φ9(Φ11) | Φ14 | 45N.m | 1.2kgs |
| RV040 | RW040 | 7.5~100 | 40mm | .09KW~.55KW | Φ9(Φ11,Φ14) | Φ18(Φ19) | 84N.m | 2.3kgs |
| RV050 | RW050 | 7.5~a hundred | 50mm | .12KW~1.5KW | Φ11(Φ14,Φ19) | Φ25(Φ24) | 160N.m | three.5kgs |
| RV063 | RW063 | 7.5~100 | 63mm | .18KW~2.2KW | Φ14(Φ19,Φ24) | Φ25(Φ28) | 230N.m | six.2kgs |
| RV075 | RW075 | seven.5~one hundred | 75mm | .25KW~4.0KW | Φ14(Φ19,Φ24,Φ28) | Φ28(Φ35) | 410N.m | nine.0kgs |
| RV090 | RW090 | seven.5~100 | 90mm | .37KW~4.0KW | Φ19(Φ24,Φ28) | Φ35(Φ38) | 725N.m | thirteen.0kgs |
| RV110 | RW110 | 7.5~100 | 110mm | .55KW~7.5KW | Φ19(Φ24,Φ28,Φ38) | Φ42 | 1050N.m | 35.0kgs |
| RV130 | RW130 | seven.5~a hundred | 130mm | .75KW~7.5KW | Φ24(Φ28,Φ38) | Φ45 | 1550N.m | 48.0kgs |
| RV150 | RW150 | seven.5~a hundred | 150mm | 2.2KW~15KW | Φ28(Φ38,Φ42) | Φ50 | eighty four.0kgs |
GMRV Outline Dimension:
| GMRV | A | B | C | C1 | D(H8) | E(h8) | F | G | G1 | H | H1 | I | M | N | O | P | Q | R | S | T | BL | β | b | t | V |
| 030 | eighty | ninety seven | 54 | 44 | 14 | elli beş | 32 | fifty six | 63 | 65 | 29 | elli beş | 40 | fifty seven | otuz | 75 | forty four | six.five | 21 | 5.5 | M6*10(n=4) | 0° | five | sixteen.3 | 27 |
| 040 | one hundred | 121.5 | 70 | sixty | 18(19) | 60 | forty three | 71 | seventy eight | yetmiş beş | 36.five | 70 | elli | seventy one.5 | kırk | 87 | 55 | 6.five | 26 | six.five | M6*10(n=4) | 45° | six | twenty.8(21.8) | 35 |
| 050 | yüz yirmi | a hundred and forty four | eighty | 70 | 25(24) | 70 | 49 | 85 | 92 | 85 | forty three.5 | eighty | sixty | eighty four | elli | yüz | sixty four | eight.5 | 30 | Yedi | M8*twelve(n=4) | 45° | 8 | 28.3(27.3) | kırk |
| 063 | one hundred forty four | 174 | yüz | 85 | twenty five(28) | 80 | sixty seven | 103 | 112 | 95 | 53 | 95 | 72 | 102 | altmış üç | one hundred ten | 80 | eight.five | 36 | 8 | M8*twelve(n=8) | 45° | 8 | 28.3(31.3) | elli |
| 075 | 172 | 205 | one hundred twenty | ninety | 28(35) | ninety five | 72 | 112 | one hundred twenty | a hundred and fifteen | fifty seven | 112.five | 86 | 119 | yetmiş beş | a hundred and forty | 93 | eleven | kırk | 10 | M8*14(n=8) | 45° | eight(10) | 31.3(38.3) | sixty |
| 090 | 206 | 238 | 140 | yüz | 35(38) | a hundred and ten | seventy four | a hundred thirty | one hundred forty | 130 | 67 | 129.5 | 103 | 135 | ninety | one hundred sixty | 102 | thirteen | forty five | 11 | M10*16(n=8) | 45° | on | 38.3(41.3) | 70 |
| a hundred and ten | 255 | 295 | one hundred seventy | 115 | kırk iki | 130 | – | a hundred and forty four | one hundred fifty five | a hundred sixty five | seventy four | one hundred sixty | 127.5 | 167.5 | a hundred and ten | 200 | a hundred twenty five | 14 | 50 | 14 | M10*18(n=8) | 45° | 12 | forty five.three | seksen beş |
| a hundred thirty | 293 | 335 | two hundred | 120 | 45 | one hundred eighty | – | a hundred and fifty five | 170 | 215 | 81 | 179 | 146.five | 187.five | a hundred thirty | 250 | one hundred forty | 16 | sixty | 15 | M12*twenty(n=8) | 45° | fourteen | 48.eight | yüz |
| one hundred fifty | 340 | four hundred | 240 | 145 | elli | one hundred eighty | – | 185 | 200 | 215 | ninety six | 210 | 170 | 230 | 150 | 250 | one hundred eighty | 18 | 72.5 | 18 | M12*22(n=8) | 45° | fourteen | 53.8 | 120 |
Business Profile
About CZPT Transmission:
We are a professional reducer manufacturer located in HangZhou, ZHangZhoug province.
Our top products is full selection of RV571-a hundred and fifty worm reducers , also equipped GKM hypoid helical gearbox, GRC inline helical gearbox, Computer models, UDL Variators and AC Motors, G3 helical gear motor.
Items are broadly used for programs such as: foodstuffs, ceramics, packing, chemical compounds, pharmacy, plastics, paper-producing, construction equipment, metallurgic mine, environmental safety engineering, and all types of computerized lines, and assembly traces.
With fast supply, outstanding following-product sales services, sophisticated producing facility, our goods market well both at property and abroad. We have exported our reducers to Southeast Asia, Eastern Europe and Center East and so on.Our intention is to create and innovate on basis of high high quality, and create a good status for reducers.
Packing data:Plastic Bags+Cartons+Wood Instances , or on request
We take part Germany Hannver Exhibition-ZheJiang PTC Truthful-Turkey Earn Eurasia
Logistics
Soon after Sales Support
one.Servicing Time and Guarantee:In 1 12 months soon after getting goods.
2.Other Provider: Like modeling variety manual, set up information, and problem resolution guidebook, etc.
SSS
one.Q:Can you make as for every client drawing?
A: Of course, we supply customized provider for buyers appropriately. We can use customer’s nameplate for gearboxes.
two.Q:What is your conditions of payment ?
A: 30% deposit just before manufacturing,stability T/T prior to delivery.
3.Q:Are you a trading organization or company?
A:We are a manufacurer with advanced equipment and knowledgeable staff.
4.Q:What is actually your production potential?
A:8000-9000 PCS/Thirty day period
5.Q:Cost-free sample is offered or not?
A:Of course, we can offer totally free sample if consumer concur to pay for the courier value
6.Q:Do you have any certification?
A:Of course, we have CE certificate and SGS certificate report.
Contact information:
Ms Lingel Pan
For any queries just truly feel free ton make contact with me. Many thanks for your sort focus to our firm!
|
US $10-200 / Parça | |
1 Adet (Minimum Sipariş) |
###
| Başvuru: | Motor, Machinery, Marine, Agricultural Machinery, Industry |
|---|---|
| İşlev: | Distribution Power, Change Drive Torque, Speed Changing, Speed Reduction |
| Düzen: | Right Angle |
| Sertlik: | Sertleştirilmiş Diş Yüzeyi |
| Kurulum: | Horizontal Type |
| Adım: | Double-Step |
###
| Örnekler: |
US$ 10/Piece
1 Adet (Minimum Sipariş) |
|---|
###
| Özelleştirme: |
Mevcut
|
|---|
###
| Old Model |
New Model | Ratio | Center Distance | Power | Input Dia. | Output Dia. | Output Torque | Ağırlık |
| RV025 | 7.5~100 | 25mm | 0.06KW~0.12KW | Φ9 | Φ11 | 21N.m | 0.7kgs | |
| RV030 | RW030 | 7.5~100 | 30mm | 0.06KW~0.25KW | Φ9(Φ11) | Φ14 | 45N.m | 1.2kgs |
| RV040 | RW040 | 7.5~100 | 40mm | 0.09KW~0.55KW | Φ9(Φ11,Φ14) | Φ18(Φ19) | 84N.m | 2.3kgs |
| RV050 | RW050 | 7.5~100 | 50mm | 0.12KW~1.5KW | Φ11(Φ14,Φ19) | Φ25(Φ24) | 160N.m | 3.5kgs |
| RV063 | RW063 | 7.5~100 | 63mm | 0.18KW~2.2KW | Φ14(Φ19,Φ24) | Φ25(Φ28) | 230N.m | 6.2kgs |
| RV075 | RW075 | 7.5~100 | 75mm | 0.25KW~4.0KW | Φ14(Φ19,Φ24,Φ28) | Φ28(Φ35) | 410N.m | 9.0kgs |
| RV090 | RW090 | 7.5~100 | 90mm | 0.37KW~4.0KW | Φ19(Φ24,Φ28) | Φ35(Φ38) | 725N.m | 13.0kgs |
| RV110 | RW110 | 7.5~100 | 110mm | 0.55KW~7.5KW | Φ19(Φ24,Φ28,Φ38) | Φ42 | 1050N.m | 35.0kgs |
| RV130 | RW130 | 7.5~100 | 130mm | 0.75KW~7.5KW | Φ24(Φ28,Φ38) | Φ45 | 1550N.m | 48.0kgs |
| RV150 | RW150 | 7.5~100 | 150mm | 2.2KW~15KW | Φ28(Φ38,Φ42) | Φ50 | 84.0kgs |
###
| GMRV | A | B | C | C1 | D(H8) | E(h8) | F | G | G1 | H | H1 | I | M | N | O | P | Q | R | S | T | BL | β | b | t | V |
| 030 | 80 | 97 | 54 | 44 | 14 | 55 | 32 | 56 | 63 | 65 | 29 | 55 | 40 | 57 | 30 | 75 | 44 | 6.5 | 21 | 5.5 | M6*10(n=4) | 0° | 5 | 16.3 | 27 |
| 040 | 100 | 121.5 | 70 | 60 | 18(19) | 60 | 43 | 71 | 78 | 75 | 36.5 | 70 | 50 | 71.5 | 40 | 87 | 55 | 6.5 | 26 | 6.5 | M6*10(n=4) | 45° | 6 | 20.8(21.8) | 35 |
| 050 | 120 | 144 | 80 | 70 | 25(24) | 70 | 49 | 85 | 92 | 85 | 43.5 | 80 | 60 | 84 | 50 | 100 | 64 | 8.5 | 30 | 7 | M8*12(n=4) | 45° | 8 | 28.3(27.3) | 40 |
| 063 | 144 | 174 | 100 | 85 | 25(28) | 80 | 67 | 103 | 112 | 95 | 53 | 95 | 72 | 102 | 63 | 110 | 80 | 8.5 | 36 | 8 | M8*12(n=8) | 45° | 8 | 28.3(31.3) | 50 |
| 075 | 172 | 205 | 120 | 90 | 28(35) | 95 | 72 | 112 | 120 | 115 | 57 | 112.5 | 86 | 119 | 75 | 140 | 93 | 11 | 40 | 10 | M8*14(n=8) | 45° | 8(10) | 31.3(38.3) | 60 |
| 090 | 206 | 238 | 140 | 100 | 35(38) | 110 | 74 | 130 | 140 | 130 | 67 | 129.5 | 103 | 135 | 90 | 160 | 102 | 13 | 45 | 11 | M10*16(n=8) | 45° | 10 | 38.3(41.3) | 70 |
| 110 | 255 | 295 | 170 | 115 | 42 | 130 | – | 144 | 155 | 165 | 74 | 160 | 127.5 | 167.5 | 110 | 200 | 125 | 14 | 50 | 14 | M10*18(n=8) | 45° | 12 | 45.3 | 85 |
| 130 | 293 | 335 | 200 | 120 | 45 | 180 | – | 155 | 170 | 215 | 81 | 179 | 146.5 | 187.5 | 130 | 250 | 140 | 16 | 60 | 15 | M12*20(n=8) | 45° | 14 | 48.8 | 100 |
| 150 | 340 | 400 | 240 | 145 | 50 | 180 | – | 185 | 200 | 215 | 96 | 210 | 170 | 230 | 150 | 250 | 180 | 18 | 72.5 | 18 | M12*22(n=8) | 45° | 14 | 53.8 | 120 |
|
US $10-200 / Parça | |
1 Adet (Minimum Sipariş) |
###
| Başvuru: | Motor, Machinery, Marine, Agricultural Machinery, Industry |
|---|---|
| İşlev: | Distribution Power, Change Drive Torque, Speed Changing, Speed Reduction |
| Düzen: | Right Angle |
| Sertlik: | Sertleştirilmiş Diş Yüzeyi |
| Kurulum: | Horizontal Type |
| Adım: | Double-Step |
###
| Örnekler: |
US$ 10/Piece
1 Adet (Minimum Sipariş) |
|---|
###
| Özelleştirme: |
Mevcut
|
|---|
###
| Old Model |
New Model | Ratio | Center Distance | Power | Input Dia. | Output Dia. | Output Torque | Ağırlık |
| RV025 | 7.5~100 | 25mm | 0.06KW~0.12KW | Φ9 | Φ11 | 21N.m | 0.7kgs | |
| RV030 | RW030 | 7.5~100 | 30mm | 0.06KW~0.25KW | Φ9(Φ11) | Φ14 | 45N.m | 1.2kgs |
| RV040 | RW040 | 7.5~100 | 40mm | 0.09KW~0.55KW | Φ9(Φ11,Φ14) | Φ18(Φ19) | 84N.m | 2.3kgs |
| RV050 | RW050 | 7.5~100 | 50mm | 0.12KW~1.5KW | Φ11(Φ14,Φ19) | Φ25(Φ24) | 160N.m | 3.5kgs |
| RV063 | RW063 | 7.5~100 | 63mm | 0.18KW~2.2KW | Φ14(Φ19,Φ24) | Φ25(Φ28) | 230N.m | 6.2kgs |
| RV075 | RW075 | 7.5~100 | 75mm | 0.25KW~4.0KW | Φ14(Φ19,Φ24,Φ28) | Φ28(Φ35) | 410N.m | 9.0kgs |
| RV090 | RW090 | 7.5~100 | 90mm | 0.37KW~4.0KW | Φ19(Φ24,Φ28) | Φ35(Φ38) | 725N.m | 13.0kgs |
| RV110 | RW110 | 7.5~100 | 110mm | 0.55KW~7.5KW | Φ19(Φ24,Φ28,Φ38) | Φ42 | 1050N.m | 35.0kgs |
| RV130 | RW130 | 7.5~100 | 130mm | 0.75KW~7.5KW | Φ24(Φ28,Φ38) | Φ45 | 1550N.m | 48.0kgs |
| RV150 | RW150 | 7.5~100 | 150mm | 2.2KW~15KW | Φ28(Φ38,Φ42) | Φ50 | 84.0kgs |
###
| GMRV | A | B | C | C1 | D(H8) | E(h8) | F | G | G1 | H | H1 | I | M | N | O | P | Q | R | S | T | BL | β | b | t | V |
| 030 | 80 | 97 | 54 | 44 | 14 | 55 | 32 | 56 | 63 | 65 | 29 | 55 | 40 | 57 | 30 | 75 | 44 | 6.5 | 21 | 5.5 | M6*10(n=4) | 0° | 5 | 16.3 | 27 |
| 040 | 100 | 121.5 | 70 | 60 | 18(19) | 60 | 43 | 71 | 78 | 75 | 36.5 | 70 | 50 | 71.5 | 40 | 87 | 55 | 6.5 | 26 | 6.5 | M6*10(n=4) | 45° | 6 | 20.8(21.8) | 35 |
| 050 | 120 | 144 | 80 | 70 | 25(24) | 70 | 49 | 85 | 92 | 85 | 43.5 | 80 | 60 | 84 | 50 | 100 | 64 | 8.5 | 30 | 7 | M8*12(n=4) | 45° | 8 | 28.3(27.3) | 40 |
| 063 | 144 | 174 | 100 | 85 | 25(28) | 80 | 67 | 103 | 112 | 95 | 53 | 95 | 72 | 102 | 63 | 110 | 80 | 8.5 | 36 | 8 | M8*12(n=8) | 45° | 8 | 28.3(31.3) | 50 |
| 075 | 172 | 205 | 120 | 90 | 28(35) | 95 | 72 | 112 | 120 | 115 | 57 | 112.5 | 86 | 119 | 75 | 140 | 93 | 11 | 40 | 10 | M8*14(n=8) | 45° | 8(10) | 31.3(38.3) | 60 |
| 090 | 206 | 238 | 140 | 100 | 35(38) | 110 | 74 | 130 | 140 | 130 | 67 | 129.5 | 103 | 135 | 90 | 160 | 102 | 13 | 45 | 11 | M10*16(n=8) | 45° | 10 | 38.3(41.3) | 70 |
| 110 | 255 | 295 | 170 | 115 | 42 | 130 | – | 144 | 155 | 165 | 74 | 160 | 127.5 | 167.5 | 110 | 200 | 125 | 14 | 50 | 14 | M10*18(n=8) | 45° | 12 | 45.3 | 85 |
| 130 | 293 | 335 | 200 | 120 | 45 | 180 | – | 155 | 170 | 215 | 81 | 179 | 146.5 | 187.5 | 130 | 250 | 140 | 16 | 60 | 15 | M12*20(n=8) | 45° | 14 | 48.8 | 100 |
| 150 | 340 | 400 | 240 | 145 | 50 | 180 | – | 185 | 200 | 215 | 96 | 210 | 170 | 230 | 150 | 250 | 180 | 18 | 72.5 | 18 | M12*22(n=8) | 45° | 14 | 53.8 | 120 |
The Parts of a Gearbox
There are many parts of a Gearbox, and this article will help you understand its functions and components. Learn about its maintenance and proper care, and you’ll be on your way to repairing your car. The complexity of a Gearbox also makes it easy to make mistakes. Learn about its functions and components so that you’ll be able to make the best choices possible. Read on to learn more. Then, get your car ready for winter!
Components
Gearboxes are fully integrated mechanical components that consist of a series of gears. They also contain shafts, bearings, and a flange to mount a motor. The terms gearhead and gearbox are not often used interchangeably in the motion industry, but they are often synonymous. Gearheads are open gearing assemblies that are installed in a machine frame. Some newer designs, such as battery-powered mobile units, require tighter integration.
The power losses in a gearbox can be divided into no-load and load-dependent losses. The no-load losses originate in the gear pair and the bearings and are proportional to the ratio of shaft speed and torque. The latter is a function of the coefficient of friction and speed. The no-load losses are the most serious, since they represent the largest proportion of the total loss. This is because they increase with speed.
Temperature measurement is another important preventive maintenance practice. The heat generated by the gearbox can damage components. High-temperature oil degrades quickly at high temperatures, which is why the sump oil temperature should be monitored periodically. The maximum temperature for R&O mineral oils is 93degC. However, if the sump oil temperature is more than 200degF, it can cause seal damage, gear and bearing wear, and premature failure of the gearbox.
Regardless of its size, the gearbox is a crucial part of a car’s drivetrain. Whether the car is a sports car, a luxury car, or a farm tractor, the gearbox is an essential component of the vehicle. There are two main types of gearbox: standard and precision. Each has its own advantages and disadvantages. The most important consideration when selecting a gearbox is the torque output.
The main shaft and the clutch shaft are the two major components of a gearbox. The main shaft runs at engine speed and the countershaft may be at a lower speed. In addition to the main shaft, the clutch shaft has a bearing. The gear ratio determines the amount of torque that can be transferred between the countershaft and the main shaft. The drive shaft also has another name: the propeller shaft.
The gears, shafts, and hub/shaft connection are designed according to endurance design standards. Depending on the application, each component must be able to withstand the normal stresses that the system will experience. Oftentimes, the minimum speed range is ten to twenty m/s. However, this range can differ between different transmissions. Generally, the gears and shafts in a gearbox should have an endurance limit that is less than that limit.
The bearings in a gearbox are considered wear parts. While they should be replaced when they wear down, they can be kept in service much longer than their intended L10 life. Using predictive maintenance, manufacturers can determine when to replace the bearing before it damages the gears and other components. For a gearbox to function properly, it must have all the components listed above. And the clutch, which enables the transmission of torque, is considered the most important component.
Fonksiyonlar
A gearbox is a fully integrated mechanical component that consists of mating gears. It is enclosed in a housing that houses the shafts, bearings, and flange for motor mounting. The purpose of a gearbox is to increase torque and change the speed of an engine by connecting the two rotating shafts together. A gearbox is generally made up of multiple gears that are linked together using couplings, belts, chains, or hollow shaft connections. When power and torque are held constant, speed and torque are inversely proportional. The speed of a gearbox is determined by the ratio of the gears that are engaged to transmit power.
The gear ratios in a gearbox are the number of steps a motor can take to convert torque into horsepower. The amount of torque required at the wheels depends on the operating conditions. A vehicle needs more torque than its peak torque when it is moving from a standstill. Therefore, the first gear ratio is used to increase torque and move the vehicle forward. To move up a gradient, more torque is required. To maintain momentum, the intermediate gear ratio is used.
As metal-to-metal contact is a common cause of gearbox failure, it is essential to monitor the condition of these components closely. The main focus of the proactive series of tests is abnormal wear and contamination, while the preventative tests focus on oil condition and additive depletion. The AN and ferrous density tests are exceptions to this rule, but they are used more for detecting abnormal additive depletion. In addition, lubrication is critical to the efficiency of gearboxes.
Bakım
Daily maintenance is a critical aspect of the life cycle of a gearbox. During maintenance, you must inspect all gearbox connection parts. Any loose or damaged connection part should be tightened immediately. Oil can be tested using an infrared thermometer and particle counters, spectrometric analysis, or ferrography. You should check for excessive wear and tear, cracks, and oil leaks. If any of these components fail, you should replace them as soon as possible.
Proper analysis of failure patterns is a necessary part of any preventative maintenance program. This analysis will help identify the root cause of gearbox failures, as well as plan for future preventative maintenance. By properly planning preventative maintenance, you can avoid the expense and inconvenience of repairing or replacing a gearbox prematurely. You can even outsource gearbox maintenance to a company whose experts are knowledgeable in this field. The results of the analysis will help you create a more effective preventative maintenance program.
It is important to check the condition of the gearbox oil periodically. The oil should be changed according to its temperature and the hours of operation. The temperature is a significant determinant of the frequency of oil changes. Higher temperatures require more frequent changes, and the level of protection from moisture and water reduces by 75%. At elevated temperatures, the oil’s molecular structure breaks down more quickly, inhibiting the formation of a protective film.
Fortunately, the gear industry has developed innovative technologies and services that can help plant operators reduce their downtime and ensure optimal performance from their industrial gears. Here are 10 steps to ensure that your gearbox continues to serve its purpose. When you are preparing for maintenance, always keep in mind the following tips:
Regular vibration analysis is a vital part of gearbox maintenance. Increased vibration signals impending problems. Visually inspect the internal gears for signs of spiraling and pitting. You can use engineers’ blue to check the contact pattern of gear teeth. If there is a misalignment, bearings or housings are worn and need replacement. Also make sure the breathers remain clean. In dirty applications, this is more difficult to do.
Proper lubrication is another key factor in the life of gearboxes. Proper lubrication prevents failure. The oil must be free of foreign materials and have the proper amount of flow. Proper lubricant selection depends on the type of gear, reduction ratio, and input power. In addition to oil level, the lubricant must be regulated for the size and shape of gears. If not, the lubricant should be changed.
Lack of proper lubrication reduces the strength of other gears. Improper maintenance reduces the life of the transmission. Whether the transmission is overloaded or undersized, excessive vibration can damage the gear. If it is not properly lubricated, it can be damaged beyond repair. Then, the need for replacement gears may arise. However, it is not a time to waste a lot of money and time on repairs.


editor by czh 2022-11-30