22211EK Double Row Spherical Roller Bearing 1:12 Tapered Inner Bore 55x100x25mm Mining Conveyor Heavy Industrial Equipment

The 22211EK is double row E-type high-capacity spherical roller bearing with 1:12 tapered inner bore, standard dimension 55×100×25mm. Spherical outer raceway brings outstanding self-aligning performance to compensate shaft deflection and installation misalignment. E optimized roller & raceway structure greatly improves dynamic load capacity; K tapered bore matches H311 adapter sleeve for fast mounting/disassembly on smooth shafts. It bears combined heavy radial load, bidirectional axial thrust and impact shock, widely used in mining conveyors, concrete mixers, paper machinery, crushers and heavy-duty gearboxes.

• E optimized internal geometry: longer crowned rollers, uniform stress distribution, 20% higher load capacity than traditional series bearings
• K 1:12 tapered inner bore, perfectly matched with H311 adapter sleeve, no keyway required, convenient installation and disassembly
• Spherical outer ring self-aligning design, allows ±0.5° angular misalignment without rising temperature or extra friction
• Double row symmetrical rollers undertake heavy radial & axial combined load, excellent anti-shock and anti-vibration performance
• Thickened quenched steel rings & rollers deliver strong wear resistance for dusty, harsh heavy-load working conditions
• Multiple optional variants: straight bore 22211E, relubrication groove 22211EK/W33, C3 enlarged clearance for high-temperature equipment
• Open structure supports periodic grease replenishment, extend service life under continuous heavy operation

• This 22211EK tapered bore spherical roller bearing is widely matched to:
• Mining belt conveyors, stone crushers and mineral processing rotary assemblies
• Concrete mixers, cement kiln auxiliary shafts and heavy construction machinery
• Paper making machinery, pulp rollers and textile large-size transmission equipment
• Agricultural heavy harvesters, large gearboxes and wind power small auxiliary units
• General industrial equipment with shaft deflection, impact load and frequent start-stop operation

• 25+ years experience in spherical roller bearing manufacturing
• Exported to 50+ countries worldwide
• Rich OEM bulk order experience for EK tapered bore heavy-duty roller bearings
• Strict roller surface finish, hardness and heavy impact load durability inspection before shipment
• Fast professional technical reply within 24 hours
• Stable mass supply for long-term mining and construction machinery factory cooperation

• GCr15 bearing steel raw material composition & hardness inspection
• Ultra-precision grinding for spherical outer raceway and crowned rollers
• Standard quenching & tempering heat treatment for uniform surface hardness HRC60-64
• Self-aligning deflection test, load fatigue test and full dimensional recheck
• Anti-rust oil treatment and shockproof wooden case packaging before delivery

• Q1: What does suffix EK stand for in 22211EK?

  E = optimized high-capacity internal structure; K = inner bore with 1:12 taper, fit H311 adapter sleeve.

• Q2: What adapter sleeve matches 22211EK?

  Standard matching adapter sleeve model H311, convenient installation on smooth cylindrical shafts.

• Q3: What angular misalignment can this bearing tolerate?

  It can adapt up to 0.5° shaft deflection without abnormal heat or noise.