Slewing Bearing Dealers

• Dimensions (LXWXH): OD645 X ID 470X 96 Teeth X 55 Height
• Type: Slewing
• Material: Stainless Steel
• Shape: Round
• Certification: ISI Certified
• Color: Grey
• Finishing: Polished

We have carved a niche as one of the supreme Large Diameter Slewing Bearings Manufacturers based in India. Construction and function of a Slewing Ring Bearing Slewing Bearing consist of an internal external ring (1) and (2) with an integrated raceway system and optional internal or external gear (3). A functional seal (4) protects the raceway system on the upper and lower sides. Slewing Rings are designed for grease lubrication which is carried out via grease nipples (5). In Slewing Rings, the rolling elements (6) carry the loads between the inner and outer ring. The load capacity of the raceway system is determined predominantly by the raceway design, the hardening depth, and the number and size of the rolling elements. Spacers (7) separate the rolling elements and minimize friction and wear. The rolling elements are inserted during manufacture through the filling plug hole (8), retained by the filling plug which is then secured by a pin (9). The force is transmitted to the mounting structure by bolts. Through holes or threaded holes (10) can be provided in the inner and outer rings for these bolts. Inner and Outer Rings (1) (2) The bearing consists of an inner and outer ring made of medium carbon steel. Such as: 42CrMo, 50Mn, C45 and so on. Each includes at least one precision raceway arranged to transfer loads and relative motion from one structure of equipment to the other, the raceways are selectively hardened to the required surface and depth necessary to transit high stresses imposed during operation of the equipment. In one location around the raceway, there is an unhardened area referred to as the hardness gap or soft spot. This area is relieved to minimize the ability of the rolling element to apply stress on it. Only one side of each ring is manufactured to be mated with the supporting structure. One or both rings may include an integral drive mechanism such as gear or sprocket teeth to enable the mechanical advantage necessary to overcome rotational resistance and provide relative motion through the bearing. Gear (3) Slewing ring can be supplied with gear teeth as an integral part of either the inner or outer ring. They are typically a standard full depth or stub involute spur gear having a 20°pressure angle with provision for backlash and confirming to AGMA Q6 quality. However, where required, modifications of the basic tooth forms, pressure angels, and quality can be provided. For assembly purposes, the maximum point of gear runout is identified with paint. Alternative methods may be applied upon request. Seals (4) A seal is included on each side of slewing ring for retention of lubricant and protection of the bearing from dust and small particle contamination. The seals are made of an elastomer material compatible with most general purpose lubricants having mineral oil and greases using lithium or calcium thickeners. If conditions require different sealing, NBF can provide details of additional options upon request. Grease Nipple (5) At least one grease nipple is supplied in one of the slewing ring for periodic lubrication of the raceway and internal components. On designs with integral gear teeth, it is located in non-geared ring. The number supplied typically increases with bearing diameter. More or less may be included upon request. Rolling Element (6) Precision rolling elements enable relative rotation and transmit load between the inner and outer rings. Hardened chrome alloy steel balls or rollers may serve as the rolling elements. They are sized appropriately for the anticipated stresses and closely matched to provide uniform load distribution between the rings and minimize rotational resistance. Spacers (7) Spacers separate the rolling elements and are designed to minimize friction, skidding, and jamming during rotation. These conditions occur as a result of load distribution and distortion of the mounting structures and bearing rings during operation of the equipment. Spacers are generally made of a plastic material compatible with typical lubricants and operating environments. Filling Plug and Pin (8) (9) The rolling elements in slewing rings may be inserted through a hole drilled radially through the non-geared race and then plugged. The plug is retained mechanically with a pin to assure proper orientation is maintained. Mounting Holes (10) The ideal hole pattern for attaching both rings of the slewing ring is a full circle of uniformly spaced through holes. It is recognized, however, that the equipment designer cannot always accommodate this type of arrangement and may require tapped holes and even special bolt patterns in one or both rings for assembly and maintenance reasons. Click Here for More Details

We are proud to be one of India’s few slew ring bearing manufacturers who have developed these products indigenously. We can guarantee that our slew ring bearings match global standards and are competitively priced.

• Brand Name: ROTHE ERDE AND ROLLIX
• Shape: Round
• Condition: New
• Usage: Industrial

We are offering slewing ring bearing from Reputed European manufacturers.

Design of the support structure the slewing ring has a limited axial stiffness: the diameter is large compared to the cross section. It must be mounted on a machined supporting base, ensuring sufficient stiffness with regard to the loads to be transferred. This makes it possible to ensure an even distribution of stresses and to avoid any deformation during operation, which would be harmful to the good working of the bearing. Therefore, it is necessary to use supporting bases with a minimum thickness not less than the values indicated in the table above. The width of the supporting surfaces is to be at the least equal to that of the ring.

• Material: Stainless Steel
• Bore Size: Upto 5 - 95 mm
• Base: ACE,ZOOMLION,POTAIN
• Outer Diameter: 200 mm to 4600 MM

• Certification: CE Certified, ISO 9001:2008
• Application: Construction, Goods Lifting
• Color: Blue, Red, Yellow
• Feature: Capable For Load, Customized Solutions, Easy To Use, Heavy Weight Lifting
• Power: 100-300bhp, 300-500bhp
• Load Capacity: 10-15tons, 15-20tons, 20-25tons
• Country of Origin: India

NIBL is the exclusive distributor for Rollix slewing bearings in India. Rollix, part of the Defontaine group, is one of the oldest manufacturers of slewing rings in Europe with an experience that spans half a century. Rollix slewing high precision bearings unique design have a special coating which offers long life with very little maintenance. These bearings have a compact design and are able to accomodate both; radial and axial loads. Rollix slewing rings can also accomodate tilting movements.

• Bore Size: diameter 36 mm to 6100 mm
• Material: 42 CrMo4QT(Steel)
• Outer Diameter: 77 mm to 6100 mm

• Brand Name: KAVITSU

Avail from us the best Slewing Ring Bearings that have no match in the market for their performance and durability. Manufactured as per industrial standards, the Slewing Ring Bearings are tested Stringently to assure their quality. We can offer the Slewing Ring Bearings in the following types of designs as mentioned below : Ball Type Single RowFlange TypeWithout GearWith External GearWith Internal Gear Ball Type Double RowWithout GearWith External GearWith Internal Gear. Roller Type Single RowWith External GearWith Internal Gear. Useful For Mobile CraneTower CraneShipboard CraneConstruction CraneContainer Handling CraneLoading and Cargo Handling

• Material: Stainless Steel
• Weight: Upto 500 kg
• Shape: Round
• Usage: Tower Crane
• Outer Diameter: Upto 5000 mm

slewing bearings are machine elements which absorb all axial and radial forces and the resulting tilting moments in a single self-retaining and ready-to-install unit. Their low profile and an excellent weightperformance ratio, open center, and the possibility of an integrated gearing make Rotek slewing bearings ideal structural components. Slewing ring bearing solutions are ideal for optimal economy in a given envelope dimension; for heavy-duty applications requiring significant load-carrying capacity; for designs where precise positioning is critical; and for the unique requirements of wind turbines. Our slewing ring bearings offer total solutions for the most demanding specifications in a variety of applications, including: Aerospace and Engineering Heavy equipment Industrial machinery Medical systems Renewable energy Semiconductor manufacturing equipment

Slewing Ring bearing has been developed as a new machine part in recent 30 years. It is first used in excavator and crane, and then applied to other machines. Slewing bearing is almost the same as oversize ball and roller bearing. Figure 1-1 shows double-row ball Slewing bearing's structure. Figure 1-2 shows how Slewing bearing is used in Caterpillar Crane. It connects the upper and lower parts of the machine, bearing the weight and working load of the upper part, and makes the upper slew relatively. Slewing bearing is widely used in different industries. It is suitable for hoisting machine (truck crane, tower crane, etc.), construction machinery (excavator, loading and unloading machine), transporting machine, material processing machine, Metallurgy Machinery, food processing machine, military product (tank, s anti-aircraft gun, radar, missile launcher, etc.), medical instrument research equipment, etc. Slewing bearing, like common bearing, has roller and rolling ring with raceway. But, compared with common roller bearing, it has many special features. They can be summarized in the following points: The size of Double-Row Ball Slewing Bearing is great; its diameter is generally between 0.4m~10m, some even is up to 40m. Slewing bearing usually bears load from different parts. It doesn't only bear the axial force, radial force, but also tipping moment simultaneously. Therefore, a set of Slewing bearing often completes the functions of many sets of common roller bearing. The speed of Slewing bearing is fairly low, usually below 10 rmin. Moreover, on most occasions, Slewing bearing doesn�t slew continually, but only slew back and force in a certain angle like the so called Swing Bearing. Slewing bearing differs greatly from roller bearing in process techniques, material and heat treatment. Generally, Slewing bearing has gear ring as driving device and Seal Device to pretend dust. Unlike the common bearing fixed on the central pivot in the bearing box, Slewing bearing has big size and is attached to upper and lower plates by bolts. Rohit Industries, a department of the Defontaine group, have designed and manufactured special bearings and slewing rings from 100 to 4500 mms diameter, with and without gear, since 1985. We have firmly positioned ourselves as one of the leading Slewing Bearing Exporters in India. 60% of our production is exported to more than 40 countries. Our engineering and design department will propose you innovating solutions, using the most modern software, as well as calculation by finite elements. The bearings and slewing rings we manufacture range in size from 10 inches to 240 inches outside diameter. They are used in construction machinery, logging machines, aerial baskets, medical equipment, military vehicles, radar antennas, and a variety of industrial equipment. In terms of both quality and delivery. Our service doesn't stop once the product ships. Being a Rohit Industries customer means that you'll enjoy the best service in the industry.

we offer slewing bearing is widely used in different industries. It is suitable for hoisting machine (truck crane, tower crane, etc.), construction machinery (excavator, loading and unloading machine), transporting machine, material processing machine, metallurgy machinery, food processing machine, military product (tanks, anti-aircraft gun, radar, missile launcher, etc.).

A prominent supplier of huge range of Slewing Bearing.

slewing bearings are machine elements which absorb all axial and radial forces and the resulting tilting moments in a single self-retaining and ready-to-install unit. Their low profile and an excellent weightperformance ratio, open center, and the possibility of an integrated gearing make Rotek slewing bearings ideal structural components.

We are one of the leading suppliers of Slewing Ring Bearings that is available in ball and roller types. These bearings are extensively used where a rotary motion is required without transmission of high radial load, rotation at slow speed and little rough application. The Ball Type has double row ball bearing slewing rings with double axis system and single row ball bearing slewing ring with four-point contact. In case of the Roller Bearing design, three roller bearing slewing rings with radial & axial roller type are applied. We can provide our clients with wide range, having up to 3500 mms external diameter with either internal teeth or external teeth cut or without any teeth. For pre-lubricated condition with grease nipples, high quality dust seals and standardized clamping bolt pattern the complete bearing is provided. These bearings give a normal life of 30000 revolutions on load. The selection of type of rolling element either roller or ball and the number of rows, entirely depends on application and method of use, such as slewing over angle, operating cycle and oscillatory motion. Our Slewing Bearing Rings find wide application in wind turbine, turntable, mobile carne, excavator, port carne, turn dish rotation in steel industry and work platform.Features:- High operational efficiency- Compact design- Long service life- Low maintenance