NUP310-E-XL-M1 50x110x27mm Single Row Cylindrical Roller Bearing

NUP310-E-XL-M1 is single row cylindrical roller bearing with metric dimension 50×110×27mm. NUP structure features double ribs on outer ring, one fixed rib plus one loose rib on inner ring, capable of bidirectional axial positioning for shafts. E stands for optimized logarithmic crowned rollers to reduce edge stress; XL represents upgraded extended load design; M1 refers to solid machined brass cage with stable roller guidance. Separable inner and outer rings simplify installation and disassembly. It carries heavy radial load and limited bidirectional axial thrust, low friction and high speed performance, widely matched for industrial gearboxes, driving motors, air compressors, construction transmission and agricultural machinery.

Model: NUP310-E-XL-M1
d:50mm, D:110mm, B:27mm
Min fillet r,r1:2mm
Dynamic load Cr:127kN, Static load C0r:112kN
Grease limiting speed:6700r/min, Oil limiting speed:8000r/min
Net weight:1.38kg
Structure: Single row cylindrical roller, NUP bidirectional locating design, E crowned roller, XL reinforced load, M1 solid brass machined cage
Material: Vacuum smelting GCr15 bearing steel, hardness HRC60-65
Clearance: Standard CN, C3/C4 customizable
Precision: P0 standard, P6/P5 optional
Operating temperature: -30℃ ~ 120℃
Dimension drawings and high-load durability test reports available on request.

• NUP unique loose rib inner ring structure, realizes accurate bidirectional axial shaft positioning without extra locating parts
• E logarithmic crowned rollers disperse contact pressure evenly, lower heat generation and avoid edge wear under heavy load
• XL upgraded internal geometry improves load rating and anti-fatigue performance for long continuous operation
• M1 integral machined brass cage holds rollers stably, resistant to high speed, vibration and high temperature
• Separable inner/outer rings, convenient split assembly for gearbox and motor maintenance
• Ultra high radial bearing capacity, stable operation under impact and heavy alternating load conditions
• Custom options: C3 loose clearance, high-temperature grease, P5 precision grade, outer ring laser marking

• Industrial transmission: Heavy duty gearboxes, reducer drive shafts, speed change equipment
• Power equipment: Large industrial driving motors, generator rotor supports, cooling fan main shafts
• Fluid machinery: Air compressors, hydraulic pump rotating assemblies, industrial blowers
• Construction machinery: Excavator auxiliary transmission parts, mixer drive units
• Agricultural machinery: Farm tractor gearboxes, grain processing equipment drive spindles

Fit OEM assembly and aftermarket replacement of high radial load, bidirectional locating industrial rotating equipment.

25 years professional manufacturer of NUP series cylindrical roller bearings. Adopt high-purity vacuum smelting GCr15 bearing steel with complete quenching and tempering heat treatment, outstanding anti-fatigue and impact resistance under long-term heavy load. Full OEM & ODM customization support for clearance grade, precision class, cage material and special lubricants. Complete strict inspection workflow: raw material hardness test, CNC ultra-precision raceway superfinishing, crowned roller forming sorting and high-speed rotation aging test. 24-hour professional technical support for split shaft assembly tolerance and gearbox lubrication scheme design. Factory direct bulk price, sufficient NUP310-E-XL-M1 bearing spot stock for global gearbox, motor and compressor manufacturers.

1. Raw material chemical composition and hardness inspection
2. Integral quenching and stress relief tempering to eliminate internal residual stress
3. CNC ultra-precision inner and outer ring raceway mirror superfinishing
4. Logarithmic crowned roller processing, precision sorting and solid brass cage machining
5. Dust-free assembly pre-filled with high-speed anti-wear mechanical grease
6. Continuous rotation aging and heavy radial load cycle wear resistance testing
7. Full dimensional inspection, anti-rust oil coating, neutral moisture-proof export carton packaging

Each batch passes rotation smoothness and temperature rise test to guarantee stable long-term high-load bidirectional locating operation for industrial transmission equipment.

Send inquiries for NUP310-E-XL-M1 single row cylindrical roller bearings used on industrial gearboxes, driving motors and air compressors.
Available services:

1. Standard formal quotation document delivered within 24 working hours
2. Technical guidance for split shaft fit tolerance and gearbox lubrication layout
3. Upgrade options: P5 high precision grade, C3 loose clearance, high-temperature synthetic grease
4. Competitive factory bulk unit price for large quantity orders

Please state order quantity, operating load, rotating speed and working environment to receive complete quotation documents.