CNC EDM HF630AMZQ-G15 Middle Speed Wire Cut Machine
CNC EDM HF630AMZQ-G15中速切线机
| 型号。 | hf630amzq-G15 |
| 过程使用 | 金属切割数控机床 |
| 控制方法 | 闭环控制 |
| 加工精度 | 0.01毫米 |
| 证明 | iso 9001 |
| 商标 | HF |
| 规范 | 2450 * 2454 *2100毫米 |
| HS编码 | 8456301090 |
| 应用 | 金属 |
| 运动方法 | 线性控制 |
| 数控 | CNC / MNC |
| 绩效分类 | 中档数控机床 |
| 条件 | 新 |
| 运输包装 | 木头箱子 |
| 起源 | 中国 |
CNC edm HF630AMZQ-G15中速切线机
I. 设备应用
本设备主要用于各种模具，电极，精密零件和零件制造，硬质合金，硬化钢，石墨，铝合金，结构钢，不锈钢，钛合金，金刚石等导电复合腔加工和表面形状。
II。 主要技术参数
III。饰品
IV。工具结构的特点
机床和工作台采用250灰铸铁，经过几次人工时效处理，稳定性好;
2.采用精密合金钢淬火滚动导轨，选择滚动圆柱部件，与球面滚子相比，其使用寿命长，使用寿命长;同时采用大跨度导轨间距设计工作台，可提高承载能力和机床的稳定性，确保加工精度;
3.钢丝卷筒运动导轨采用塑料涂布工艺，减少了吸收和耐磨的冲击，寿命超过10年;
4.导线存储鼓的驱动由变频器，非接触式开关，柔性换向，平稳运行，可靠，无冲击，低噪音控制;灯丝管配有四个速度调节，线速度可任意设定，4级速度可以自动切换;
5.具有多重保护功能（电线超自动保护存储鼓，断线自动停机保护，短路保护，断电记忆保护，短路自动报警，自动断线自动报警，自动停机报警处理），可实现无人值守的保卫工作。
6.电控柜结构采用热泵散热设计专利技术（专利号：201220694371.0），自动散热，无需风扇，延长电柜的使用寿命，同时实现节能，清洁，无噪声。
五，数控系统
数控系统是一种具有多种切割功能的自动编程和处理控制微机系统;接线速度，脉冲参数和加工电流也可以根据需要设定，自动实现切割一次，修复次数多;
2.数控系统可以集中控制切割CNC系统，电源，冷却液和机床功能的所有工艺参数;
3.数控系统采用最新版本的HL线编程控制集成软件，控制代码采用标准ISO代码，可转换为3B代码，可进行图形编程，具有图形缩放，旋转功能，图形轨迹显示，电源故障记忆功能，自动停止功能和断线保护。短路回滚，正向和反向处理功能等;
4.数控系统具有后台编程功能，适用于机床的正常加工控制，其他程序可同时进行编译和传输;
5.采用USB接口，方便数据交换;
数控系统采用模块化设计，互换性强，易于维护，故障判断。
7.数控系统采用大功率无阻抗斩波步进电机驱动电路，是技术先进，成熟的产品，因此功耗大大降低。
六。 主要规格
1.本机采用新技术平台，可以有效提高连续大电流处理中断丝和线损的问题，长时间实现高电流切割（加工电流5A时，连续时间72小时以上;当处理电流为7A时，连续时间大于45小时）。
2.线切割数控电控柜采用“热泵”冷却专利技术生产，将电子元件自身的热量转化为空气对流散热，从而大大减少了粉尘车间的数量电控柜，延长设备使用寿命，降低能耗，降低风扇噪音，达到节能环保的目的。保护。 3.连续高效切割，不破损
对于60mm厚的45钢：
当切割速度为167 mm2 / min时，电极线寿命约为五十万mm。
当切割速度为120 mm2 / min时，电极丝的寿命约为100万mm。
电极丝的寿命：从新的切割到第一次断丝的切割面积。按照上述切割速度，工件表面粗糙度Ra ≤≤le;≤ 5.0μm.icro;米。icro;m.
低线损
当切割速度为100mm2 / min时，连续切割的总面积为400000，导线损耗 ≤≤le;≤ 0.01毫米;
当切割速度为167mm2 / min时，连续切割的总面积为150000，导线损耗 ≤≤le;≤ 0.01毫米。
电线损耗：放电加工失电后，直径从0.18mm钼丝线直径减小到0.17mm。
适应本身
采用自适应跟踪变频馈电技术，即使在大电流高速切割时，特别是高厚度切割，只需要了解工件的厚度值，就可以实现自适应跟踪变频馈电，对于切割加工尤其是稳定用于加工厚度大于500mm的工件，具有明显的技术优势。
七 . 随机提供以下技术图纸和一组数据：
原始随机技术文件
2. HF系列线切机（机械部）规格
3.控制柜的使用说明书。
（HL）编程指令
七。原装配件 :
八。推荐的备件清单
I. 设备应用
本设备主要用于各种模具，电极，精密零件和零件制造，硬质合金，硬化钢，石墨，铝合金，结构钢，不锈钢，钛合金，金刚石等导电复合腔加工和表面形状。
II。 主要技术参数
| 没有。 | 名称 | 数据 |
| 1 | 工作台尺寸 | 1254 *770毫米 |
| 2 | 工作台行程（X * Y） | 630 *800毫米 |
| 3 | 最大切割厚度 | 300毫米（可调） |
| 4 | 锥体 | 6°°deg;°（当中间的中间"上下导轮"是200mm） |
| 5 | U,V旅行 | ±±plusmn;±20毫米 |
| 6 | 多次切割 | 切割次数可编程 |
| 7 | 表面粗糙度（拉伸） | 镭≤≤le;≤1.0um与1剪切3脱脂 |
| 8 | 八角切割精度（拉伸） | ≤≤le;≤0.01mm，1次切割2次 |
| 9 | 最大切割效率随时间推移 | ≥≥ge;≥180 mm2 / min |
| 10 | 钼丝磨损 | 当切割速度高达100mm²/ min2; / min2;/min,连续切割400000mm2，线磨损小于或等于0.01mm。 |
| 11 | 钼丝直径 | ≤≤le;≤0.25毫米 |
| 12 | 线速度 | 频率可调 (2米/秒-11米/秒) |
| 13 | 总重量 | 3200公斤 |
| 14 | 最大承重 | 2300公斤 |
| 15 | 机器尺寸 | 2450 * 2454 *2100毫米 |
| 16 | 完全电力使用 | ≤≤le;≤0.8千瓦 |
III。饰品
| 没有。 | 名称 | 数量 |
| 1 | X，Y轴滚珠丝杠 | 2套 |
| 2 | 324前惰轮 | 2套 |
| 3 | 521返回惰轮 | 4套 |
| 4 | 6203绕线轴承 | 6套 |
| 5 | 624惰轮滑轮轴承 | 20套 |
| 6 | 精确 滚动轨道 | 8套 |
| 7 | 90 bf006x,Y步进电机 | 2套 |
| 8 | 45 bf003u,V步进电机 | 2套 |
| 9 | 17英寸液晶显示屏 | 1套 |
| 10 | FPJA内核高速芯片 | 1套 |
| 11 | 电控系统 | 1套 |
IV。工具结构的特点
机床和工作台采用250灰铸铁，经过几次人工时效处理，稳定性好;
2.采用精密合金钢淬火滚动导轨，选择滚动圆柱部件，与球面滚子相比，其使用寿命长，使用寿命长;同时采用大跨度导轨间距设计工作台，可提高承载能力和机床的稳定性，确保加工精度;
3.钢丝卷筒运动导轨采用塑料涂布工艺，减少了吸收和耐磨的冲击，寿命超过10年;
4.导线存储鼓的驱动由变频器，非接触式开关，柔性换向，平稳运行，可靠，无冲击，低噪音控制;灯丝管配有四个速度调节，线速度可任意设定，4级速度可以自动切换;
5.具有多重保护功能（电线超自动保护存储鼓，断线自动停机保护，短路保护，断电记忆保护，短路自动报警，自动断线自动报警，自动停机报警处理），可实现无人值守的保卫工作。
6.电控柜结构采用热泵散热设计专利技术（专利号：201220694371.0），自动散热，无需风扇，延长电柜的使用寿命，同时实现节能，清洁，无噪声。
五，数控系统
数控系统是一种具有多种切割功能的自动编程和处理控制微机系统;接线速度，脉冲参数和加工电流也可以根据需要设定，自动实现切割一次，修复次数多;
2.数控系统可以集中控制切割CNC系统，电源，冷却液和机床功能的所有工艺参数;
3.数控系统采用最新版本的HL线编程控制集成软件，控制代码采用标准ISO代码，可转换为3B代码，可进行图形编程，具有图形缩放，旋转功能，图形轨迹显示，电源故障记忆功能，自动停止功能和断线保护。短路回滚，正向和反向处理功能等;
4.数控系统具有后台编程功能，适用于机床的正常加工控制，其他程序可同时进行编译和传输;
5.采用USB接口，方便数据交换;
数控系统采用模块化设计，互换性强，易于维护，故障判断。
7.数控系统采用大功率无阻抗斩波步进电机驱动电路，是技术先进，成熟的产品，因此功耗大大降低。
六。 主要规格
1.本机采用新技术平台，可以有效提高连续大电流处理中断丝和线损的问题，长时间实现高电流切割（加工电流5A时，连续时间72小时以上;当处理电流为7A时，连续时间大于45小时）。
2.线切割数控电控柜采用“热泵”冷却专利技术生产，将电子元件自身的热量转化为空气对流散热，从而大大减少了粉尘车间的数量电控柜，延长设备使用寿命，降低能耗，降低风扇噪音，达到节能环保的目的。保护。 3.连续高效切割，不破损
对于60mm厚的45钢：
当切割速度为167 mm2 / min时，电极线寿命约为五十万mm。
当切割速度为120 mm2 / min时，电极丝的寿命约为100万mm。
电极丝的寿命：从新的切割到第一次断丝的切割面积。按照上述切割速度，工件表面粗糙度Ra ≤≤le;≤ 5.0μm.icro;米。icro;m.
低线损
当切割速度为100mm2 / min时，连续切割的总面积为400000，导线损耗 ≤≤le;≤ 0.01毫米;
当切割速度为167mm2 / min时，连续切割的总面积为150000，导线损耗 ≤≤le;≤ 0.01毫米。
电线损耗：放电加工失电后，直径从0.18mm钼丝线直径减小到0.17mm。
适应本身
采用自适应跟踪变频馈电技术，即使在大电流高速切割时，特别是高厚度切割，只需要了解工件的厚度值，就可以实现自适应跟踪变频馈电，对于切割加工尤其是稳定用于加工厚度大于500mm的工件，具有明显的技术优势。
七 . 随机提供以下技术图纸和一组数据：
原始随机技术文件
2. HF系列线切机（机械部）规格
3.控制柜的使用说明书。
（HL）编程指令
七。原装配件 :
| 没有。 | 名称 | 数 |
| 1 | 起重机 | 4颗 |
| 2 | 特殊扳手 | 1套 |
| 3 | 丝绸垂直校正器 | 1支 |
| 4 | 专用夹具 | 1套 |
| 5 | 环保专用乳胶霜 | 1套 |
| 6 | 高压过滤器工作液箱 | 1套 |
| 7 | 电线轮严密 | 1支 |
| 8 | 防震垫铁 | 6件 |
八。推荐的备件清单
| 没有。 | 名称 | 用于 | 数 |
| 1 | 惰轮 | 电线架 | 6件 |
| 2 | 导电块组件 | 电线架 | 3套 |
| 3 | 0.18钼丝 | 电线架 | 350米/时间 |
| 4 | JR1A工作液体 | 水箱 | 2公斤 |
| 5 | 小同步轮 | 吐丝 | 1支 |
| 6 | 同步 带 | 吐丝 | 1root |
| 7 | 滚筒 轴承 | 电线架 | 20片装 |
| Model NO. | HF630AMZQ-G15 |
| Process Usage | Metal-Cutting CNC Machine Tools |
| Control Method | Closed-Loop Control |
| Processing Precision | 0.01mm |
| Certification | ISO 9001 |
| Trademark | HF |
| Specification | 2450*2454*2100mm |
| HS Code | 8456301090 |
| Application | Metal |
| Movement Method | Linear Control |
| Numerical Control | CNC/MNC |
| Performance Classification | Mid-Range CNC Machine Tools |
| Condition | New |
| Transport Package | Wooden Case |
| Origin | China |
CNC edm HF630AMZQ-G15 Middle Speed Wire Cut Machine
I. Equipment application
This equipment is mainly used for all kinds of mold, electrode, precision parts and components manufacturing, cemented carbide, hardened steel, graphite, aluminum alloy, structural steel, stainless steel, titanium alloy, diamond and other conductive complex cavity machining and surface forms.
II. Main technical parameter
III. Accessories
IV. Characteristics of tool's structure
1. The machine bed and worktable adopt 250 gray cast iron, which experienced several times of artificial aging treatment, with good stability;
2. It adopts precision alloy steel quenching rolling guide, choose rolling cylindrical parts, compared with spherical roller, its capacity is big and long service life;At the same time, large span guide spacing design workbench is adopted, which can improve the bearing capacity and stability of machine tool, to ensure the machining accuracy;
3. Motion guide rail of Storage drum for wire adopts Plastic coated process, reducing the shock of absorption and wear-resisting, its lifetime is more than 10 years;
4. The drive of storage drum for wire is controlled by frequency converter, non-contact switch, flexible commutation, smooth operation, reliable, no impact, low noise;Filament tube is equipped with four speed adjustment, speed of wire can be set arbitrarily, 4th level speed can be automatically switch;
5. With multiple protecting functions (storage drum for wire super automatic protection, broken wires automatic shutdown protection of machine, short circuit back protection, power failure memory protection, short circuit automatic alarm, automatic alarm by automatic broken, and automatic stop and alarm after processing), which can realize unmanned guard work.
6. Electric control cabinet structure adopts heat pump Heat dissipation design patent technology (patent no. 201220694371.0), automatic heat dissipation, no need of fan, prolong the service life of electric cabinet, at the same time,achieving energy saving, cleanness, no noise.
V. Numerical control system
1. The numerical control system is an automatic programming and processing control microcomputer system integration with multiple cutting function; Wiring speed speed, pulse parameters and machining current can also be set on demand, automatically realize cutting once and repairing many times;
2. The numerical control system can centralized control all process parameters on the cutting CNC system, power supply, cooling fluid and function of machine tool;
3. The numerical control system adopts the latest version of the HL line programming control integration software, the control code uses standard ISO code, and it can be transformed into 3B code, which can perform a graphical programming, with functions of graphics scaling, rotating, graphics track display, power failure memory function, automatic stop function and wire break protection when process is finished. Short circuit's rollback, forward and reverse processing functions, etc;
4. The numerical control system has the background programming function, for in the normal processing control of machine tool, other programs can be compiled and transmission at the same time;
5. With USB interface, convenient for data exchange;
6. The numerical control system adopts modular design, with strong interchangeability, easy to maintenance and judge for fault.
7. The numerical control system adopts high power without resistance chopper stepper motor drive circuit, which is technology advanced and mature products, as a result, the power consumption is greatly reduced.
VI. Main Specifications
1. The machine adopted new technology platform, which can effectively improve the problem of broken wire and wire loss in continuous large current processing, achieve high current cutting for a long time (when processing current is 5A, continuous time is more than 72 hours; when processing current is 7A, continuous time is more than 45 hours).
2. Wire-cutting CNC electric control cabinet are produced by using the 'heat pump' cooling patented technology, which take the electric elements' own heat into air's convection power for heat dissipation , by this, it can greatly reduce amount of dust workshop into the electric control cabinet, prolong the service life of equipment, reducing energy consumption, reducing the fan noise and achieving the aim of energy conservation and environmental protection. protection. 3. Continuous high efficiency cutting without breakage
For 60 mm thick type of 45 steel:
When the cutting speed is in 167 mm2/min, the life of electrode wire is about five hundred thousand mm.
When the cutting speed is in 120 mm2/min, the life of electrode wire is about one million mm.
The life of electrode wire: The total cutting area from the new discharge for cutting to the first time of wire's broken. In accordance with the the above cutting speed, The surface roughness of workpiece Ra ≤≤le;≤ 5.0µm.icro;m.icro;m.
4. Low wire loss
When the cutting speed is in 100mm2/min, total area of continuous cutting is 400000, wire loss ≤≤le;≤ 0.01mm;
When the cutting speed is in 167mm2/min, total area of continuous cutting is 150000, wire loss ≤≤le;≤ 0.01mm.
Wire loss: The diameter reduced to 0.17 mm diameter from the diameter of 0.18 mm molybdenum wire after the loss of electro discharge machining.
5. Adapted by itself
With adaptive tracking frequency conversion feeding technology, even in the large current when high-speed cutting especially high thickness cutting, only need to know the workpiece's thickness value, it can realize the adaptive tracking frequency conversion feeding, it is stable for Cutting processing, especially for machining workpiece whose thickness is more than 500mm, which has obvious technical advantage.
VII . Random provide the following technical drawings, and a set of data:
1. Original random technical documents
2. HF series of wire-cut edm machine (mechanical part) specification
3.control cabinet's operating instructions.
4.(HL) programming instructions
VII. Original accessories :
VIII. A recommended list of spare parts
I. Equipment application
This equipment is mainly used for all kinds of mold, electrode, precision parts and components manufacturing, cemented carbide, hardened steel, graphite, aluminum alloy, structural steel, stainless steel, titanium alloy, diamond and other conductive complex cavity machining and surface forms.
II. Main technical parameter
| No. | Name | Data |
| 1 | Working table size | 1254*770mm |
| 2 | Working table travel (X*Y) | 630*800mm |
| 3 | Maximum cutting thickness | 300mm(adjustable) |
| 4 | Taper | 6°°deg;°(when the central disrance between"Upper and Lower Guide Wheels"is 200mm) |
| 5 | U,V travel | ±±plusmn;±20mm |
| 6 | Multiple cutting | The times of cutting can be programmed |
| 7 | Surface roughness(streched) | Ra≤≤le;≤1.0um with 1 cut 3 skim |
| 8 | Octagon cutting accuracy (streched) | ≤≤le;≤0.01mm with 1 cut 2 skim |
| 9 | Maximum cutting efficiency over time | ≥≥ge;≥180 mm2/min |
| 10 | Molybdenum wire wear | When the cutting speed up to 100mm²/min2;/min2;/min,cutting 400000mm2 in a row,the wire wear is less than or equal to 0.01mm. |
| 11 | Molybdenum wire diameter | ≤≤le;≤0.25mm |
| 12 | Wire rotation speed | Frequency adjustable (2 m/s-11 m/s) |
| 13 | Total weight | 3200kg |
| 14 | Maximum carrying weight | 2300kg |
| 15 | Machine dimention | 2450*2454*2100mm |
| 16 | Totally power usage | ≤≤le;≤0.8KW |
III. Accessories
| No. | Name | Quantity |
| 1 | X, Y Axis ball screw | 2 sets |
| 2 | 324 Front idler pulley | 2 sets |
| 3 | 521 Back idler pulley | 4 sets |
| 4 | 6203 Wire winding bearing | 6 sets |
| 5 | 624 Idler pulley bearing | 20 sets |
| 6 | Precision rolling rail | 8 sets |
| 7 | 90 BF006X,Y stepping motor | 2 sets |
| 8 | 45 BF003U,V stepping motor | 2 sets |
| 9 | 17 Inch LCD display | 1 set |
| 10 | FPJA Core high speed chip | 1 set |
| 11 | Electric control system | 1 set |
IV. Characteristics of tool's structure
1. The machine bed and worktable adopt 250 gray cast iron, which experienced several times of artificial aging treatment, with good stability;
2. It adopts precision alloy steel quenching rolling guide, choose rolling cylindrical parts, compared with spherical roller, its capacity is big and long service life;At the same time, large span guide spacing design workbench is adopted, which can improve the bearing capacity and stability of machine tool, to ensure the machining accuracy;
3. Motion guide rail of Storage drum for wire adopts Plastic coated process, reducing the shock of absorption and wear-resisting, its lifetime is more than 10 years;
4. The drive of storage drum for wire is controlled by frequency converter, non-contact switch, flexible commutation, smooth operation, reliable, no impact, low noise;Filament tube is equipped with four speed adjustment, speed of wire can be set arbitrarily, 4th level speed can be automatically switch;
5. With multiple protecting functions (storage drum for wire super automatic protection, broken wires automatic shutdown protection of machine, short circuit back protection, power failure memory protection, short circuit automatic alarm, automatic alarm by automatic broken, and automatic stop and alarm after processing), which can realize unmanned guard work.
6. Electric control cabinet structure adopts heat pump Heat dissipation design patent technology (patent no. 201220694371.0), automatic heat dissipation, no need of fan, prolong the service life of electric cabinet, at the same time,achieving energy saving, cleanness, no noise.
V. Numerical control system
1. The numerical control system is an automatic programming and processing control microcomputer system integration with multiple cutting function; Wiring speed speed, pulse parameters and machining current can also be set on demand, automatically realize cutting once and repairing many times;
2. The numerical control system can centralized control all process parameters on the cutting CNC system, power supply, cooling fluid and function of machine tool;
3. The numerical control system adopts the latest version of the HL line programming control integration software, the control code uses standard ISO code, and it can be transformed into 3B code, which can perform a graphical programming, with functions of graphics scaling, rotating, graphics track display, power failure memory function, automatic stop function and wire break protection when process is finished. Short circuit's rollback, forward and reverse processing functions, etc;
4. The numerical control system has the background programming function, for in the normal processing control of machine tool, other programs can be compiled and transmission at the same time;
5. With USB interface, convenient for data exchange;
6. The numerical control system adopts modular design, with strong interchangeability, easy to maintenance and judge for fault.
7. The numerical control system adopts high power without resistance chopper stepper motor drive circuit, which is technology advanced and mature products, as a result, the power consumption is greatly reduced.
VI. Main Specifications
1. The machine adopted new technology platform, which can effectively improve the problem of broken wire and wire loss in continuous large current processing, achieve high current cutting for a long time (when processing current is 5A, continuous time is more than 72 hours; when processing current is 7A, continuous time is more than 45 hours).
2. Wire-cutting CNC electric control cabinet are produced by using the 'heat pump' cooling patented technology, which take the electric elements' own heat into air's convection power for heat dissipation , by this, it can greatly reduce amount of dust workshop into the electric control cabinet, prolong the service life of equipment, reducing energy consumption, reducing the fan noise and achieving the aim of energy conservation and environmental protection. protection. 3. Continuous high efficiency cutting without breakage
For 60 mm thick type of 45 steel:
When the cutting speed is in 167 mm2/min, the life of electrode wire is about five hundred thousand mm.
When the cutting speed is in 120 mm2/min, the life of electrode wire is about one million mm.
The life of electrode wire: The total cutting area from the new discharge for cutting to the first time of wire's broken. In accordance with the the above cutting speed, The surface roughness of workpiece Ra ≤≤le;≤ 5.0µm.icro;m.icro;m.
4. Low wire loss
When the cutting speed is in 100mm2/min, total area of continuous cutting is 400000, wire loss ≤≤le;≤ 0.01mm;
When the cutting speed is in 167mm2/min, total area of continuous cutting is 150000, wire loss ≤≤le;≤ 0.01mm.
Wire loss: The diameter reduced to 0.17 mm diameter from the diameter of 0.18 mm molybdenum wire after the loss of electro discharge machining.
5. Adapted by itself
With adaptive tracking frequency conversion feeding technology, even in the large current when high-speed cutting especially high thickness cutting, only need to know the workpiece's thickness value, it can realize the adaptive tracking frequency conversion feeding, it is stable for Cutting processing, especially for machining workpiece whose thickness is more than 500mm, which has obvious technical advantage.
VII . Random provide the following technical drawings, and a set of data:
1. Original random technical documents
2. HF series of wire-cut edm machine (mechanical part) specification
3.control cabinet's operating instructions.
4.(HL) programming instructions
VII. Original accessories :
| NO. | Name | Number |
| 1 | derrick | 4pcs |
| 2 | Special wrench | 1set |
| 3 | Silk verticality corrector | 1pcs |
| 4 | Special fixture | 1set |
| 5 | Environmental protection special emulsion cream | 1set |
| 6 | High pressure filter working liquid box | 1set |
| 7 | Tight wire wheel | 1pcs |
| 8 | Anti-shock pad iron | 6pcs |
VIII. A recommended list of spare parts
| NO. | Name | Use for | Number |
| 1 | Idler pulley | Wire rack | 6pcs |
| 2 | Conductive block component | Wire rack | 3sets |
| 3 | 0.18molybdenum wire | Wire rack | 350m/time |
| 4 | JR1A Working liquid | water box | 2kgs |
| 5 | Small Synchronous wheel | Silking | 1pcs |
| 6 | synchronous belt | Silking | 1root |
| 7 | Roller bearing | Wire rack | 20pcs |
