SL Full Complement Cylindrical Roller Bearings: Features, Models & Applications

SL full complement cylindrical roller bearings are cage-free heavy-duty bearings designed for low-speed, high-load and compact installation scenarios. Compared with caged bearings, this full complement structure equips more rollers to achieve ultra-high radial load capacity. Featuring high running accuracy, stable rib guidance and reinforced structural design, SL series bearings are widely applied in metallurgy, mining, port machinery and various heavy industrial equipment, delivering reliable heavy-load operation performance.

1. Core Bearing Features

•Ultra-High Radial Load Capacity: Adopts no-cage full complement design, carrying 20%–30% more rollers than standard caged bearings. It maximizes rolling elements in limited space and provides outstanding heavy-load bearing performance.

•High Motion Accuracy: Precision rib guiding structure ensures stable operation. The inner ring is designed with three ribs, while the outer ring adopts middle or double ribs. Rollers are accurately guided by inner ring ribs to reduce running deviation.

•Reinforced Structural Stability: Double-row SL series bearings adopt split inner rings matched with lock rings, effectively locking internal components and improving overall structural stability under long-term heavy vibration and load.

•Professional Working Condition Adaptation: Perfect for low-speed, low-temperature and heavy-duty working environments. It runs stably with good lubrication and high housing cleanliness, ideal for continuous heavy-load mechanical operation.

2. Product Classification

•By Row Count: Single-row full complement bearings (SL18 series, SL19 series); Double-row full complement bearings (SL04 series, SL1850 series)

•By Structural Positioning: NU/N type (free axial displacement); NJ/NF type (one-way axial positioning); NUP type (two-way axial positioning); V suffix reinforced full complement models (NJ…V, NUP…V, RNU…V)

3. Full-Series Mainstream Models

SL18 Single Row Series: SL182204, SL182205, SL182206, SL182207, SL182208, SL182209, SL182210, SL182212, SL182214, SL182216

SL19 Single Row Series: SL192304, SL192305, SL192306, SL192308, SL192310, SL192312, SL192314, SL192316

SL04 Double Row Series: SL045008, SL045010, SL045012, SL045014, SL045016, SL045018, SL045020

SL1850 Double Row Series: SL185012, SL185014, SL185016, SL185018, SL185020, SL185022, SL185024

V Suffix Full Complement Models: NJ206V, NJ208V, NUP210V, RNU212V, NJ214V, NUP216V heavy-duty non-cage bearings

Functional Types: C3 large clearance, high rigidity, low-temperature resistant customized models

4. Application Scope

SL full complement cylindrical roller bearings are widely used in low-speed heavy-duty industrial scenarios, including metallurgical machinery, mining equipment, port crane pulley blocks, precision heavy machinery and compact high-load industrial equipment.

5. Product Advantages

Our SL full complement cylindrical roller bearings feature maximum roller arrangement, ultra-high radial load capacity and precise rib guiding. Lock ring reinforced double-row structure ensures stable operation under severe heavy-load conditions. Multiple series and positioning types meet diverse compact installation and low-speed heavy-duty demands, providing durable and cost-effective bearing solutions for heavy industrial machinery.