Overview
Flange mounted bearings, also known as flange units or plummer blocks, are specialized bearings housed in a flanged frame for direct mounting onto flat surfaces. They eliminate the need for complex housing designs, making them ideal for space-constrained industrial applications. These bearings are engineered to handle both radial and axial loads, with sealed variants offering protection against dust and moisture. Common configurations include 2-bolt, 3-bolt, or 4-bolt flange types, selected based on load distribution requirements.
Structure and Working Principle
A standard flange bearing consists of an inner ring (press-fitted onto the shaft), outer ring, rolling elements (balls or rollers), and a flanged housing. The flange provides mounting stability via pre-drilled bolt holes, while the bearing core reduces friction during rotation. Advanced models incorporate rubber seals (e.g., NBR or FKM) for contamination resistance and grease retention. Some feature self-aligning designs to compensate for minor shaft misalignment, crucial in heavy-duty applications like conveyor pulleys.
Key Features
1. **Easy Installation**: Pre-assembled units reduce assembly time and require no additional housing. 2. **Versatility**: Available in stainless steel for corrosive environments or thermoplastic housings for washdown areas. 3. **Load Capacity**: Radial loads up to 50 kN and axial loads up to 25 kN in standard series. High-performance variants include temperature-resistant coatings (-30°C to +150°C) and FDA-compliant materials for food processing applications.
Application Areas
**Industrial Machinery**: Used in conveyor rollers, packaging machines, and printing equipment due to their vibration damping properties. **Agriculture**: Ideal for grain augers and harvesting equipment where dust and moisture resistance are critical. **Food & Beverage**: Stainless steel models meet hygiene standards in bottling lines and dairy processing. Other sectors include HVAC systems, automotive assembly lines, and renewable energy installations like solar tracker systems.
Maintenance and Precautions
Regular inspection for wear (noise/vibration) and relubrication every 3–6 months under normal conditions is recommended. Use lithium-based greases for general purposes or food-grade lubricants where required. Avoid direct water jets during cleaning unless IP69K-rated. Misalignment beyond 0.5° may cause premature failure—use laser alignment tools during installation. For heavy shock loads, consider bearings with reinforced cages or tapered roller designs.
B2B Procurement Guide
1. **Certifications**: Prioritize suppliers with ISO 9001 certification and bearing-specific standards like ISO 15 (metric series) or ANSI/ABMA. 2. **Customization**: Many manufacturers offer bespoke bore sizes (10–100 mm common), seal types, and flange coatings. 3. **MOQs**: Standard units often have no MOQ, while custom designs may require 50+ units. Leading global suppliers include SKF, NSK, and Timken. For cost-sensitive projects, Chinese manufacturers like C&U Group provide competitive pricing with approximate lead times of 4–8 weeks.
Related Manufacturers
- 主营：进口轴承、SKF轴承、NSK轴承、NTN轴承、HRB轴承、国产轴承
- 主营：包塑轴承、缆绳轴承、滑轮轴承、尼龙轴承、家具轴承、玩具轴承、拉钩轴承、包胶轴承、门窗轴承、脚轮轴承、专用轴承、套胶轴承、v型轮轴承
- 主营：钻尾丝、预埋板、防松螺母、吊顶镀锌丝杠、膨胀螺丝、蓝白丝杠、六角螺母、花瓣螺母、光伏支架、法兰螺栓、法兰螺母、化学锚栓、膨胀螺栓、电力金具、弹簧垫片、双头螺丝、地脚螺栓、一体盖母、扭剪螺栓、激光割板、抗震支架、钢结构螺栓、外六角螺丝、高强度螺栓、钢结构拉条、热镀锌拉条
- 主营：往复丝杆、滚珠往复丝杆、聚甲醛丝杆、尼龙往复丝杆、往复丝杆排绳器、卷绕电缆丝杆、往复丝杠、船舶用大型往复丝杆、大型往复丝杆、绞盘用往复丝杆、往复丝杆绕线机、无人机用往复丝杆、排线器用往复丝杆、不锈钢往复丝杆、缠绕机用往复丝杆、纺机用往复丝杆、塑料机械往复丝杆
- 主营：高大空间、高大空间机组、高大空间制热机组、吊顶式空调机组、高大空间循环空气制热机组、工业暖风机、蒸汽暖风机、空调机组、组合式空调机组、热回收新风机组、新风换气机、中央空调温控器、风机盘管温控器、三速开关面板、轴流风机、边墙风机、管道风机、壁式轴流风机、风机盘管、卡式风机盘管、风幕机、排烟风机、消防风机屋顶风机、玻璃钢风机、空气幕
- 主营：圆锥滚子、调心滚子、桥式起重机、减震轴承、滚子轴承、轮毂轴承、仪器轴承、磨床轴承、轧机轴承、承载轴承、破碎机轴承、重型机轴承、耐高温轴承、分离机轴承、减速箱轴承、水泥厂轴承、起重机轴承、塑料机械轴承、金属设备轴承、轴承铸造机械、防尘重载轴承、工业齿轮箱、玻璃打孔机、扭转试验机、智能装备仪器
- 主营：补漆笔、滚筒刷、高度尺、电焊线、手柄配、冲火机、焊把线、喷火枪、捕鼠器、放大镜、推雪板、高压锅、穿管器、氧气管、除雪器、破冰铲、显微镜、滚涂机、老鼠夹、扬声器、除雪铲、电焊机、固定器、清洗剂、助焊剂
- 主营：高大空间采暖机组、工业热水暖风机、空气幕、吊顶式射流空调机组、消防排烟风机、轴流风机、离心风机、混流风机、管道风机、边墙风机、方形壁式轴流风机、诱导风机、斜流风机、柜式离心消防排烟风机箱、防爆风机、3C消防排烟风机、3C防火阀、调节阀、静压箱、风机盘管、空调机组、组合式空调机组、热回收空调机组、夜景温控器、风口
- 主营：柱塞泵、光鼓机、液压机、轴承压装机、镗鼓机、立式车床、锻打铆钳、液压校直机、制动鼓修复、多功能铆钳、电动液压泵、双柱油压机、大架液压冷铆钳、汽车大梁压铆机、锻压冲压整形机、金属拉伸成型机
- 主营：风机盘管、新风换气机、排烟风机、吊顶式风机盘管、防火阀、空调机组、组合式空调机组、百叶风口、换气扇、表冷器、暖风机、风幕机、全热交换器、电动调节阀
- 主营：对流器、防爆阀、散流器、嵌入式吊顶天花风幕机、风幕机、换气机、送风机、热风幕、排风机、风机箱、取暖器、散热器、暖风机、运载器、通风机、空气幕、防火阀、新风机组、空间机组、旋流风口、混流风机、变频机组、涡轮风机、加热单元、多联空调、轴流风机
- 主营：冰箱、洗衣机、电视、滚珠轴承、家用电器、智能马桶盖、厨房电器、小家电、电热水器、燃气热水器、油烟机、消毒柜、茶吧机、饮水机、电风扇、胳电水壶、空气炸锅、电饭煲、空调、吸尘器、扫地机器人、洗地机、燃气灶、除湿机、电暖器、电油汀