Gbm Manufacturing Pvt. Ltd. Camac Street Area, Kolkata, West Bengal

GBM universal joint shafts are built to withstand the torsion,shear stress and large misalignments.Special end attachments and Companion Hubs are available on request.

With deeply committed to quality, we bring forth Torsion Shaft of high standards. Torsion Shaft are pipes welded to the flanges. The flanges are fastened to the geared hall sleeve of the coupling on each side by bolts and nuts. These Torsion Shafts are fabricated from high grade steel, allied metals and alloys that ensure strength and ability withstand pressure. Torsion Shaft is available with us to a span of 8 meters. Highlights Strength Durability Noiseless and frictionless performance Robust structure High tensile Materials Used : Carbon steel, stainless steel, alloy steel, copper or according to customers' needs Applications : Cement Plants / Ball Mills

GBM Sprockets are of standard range as per chain.GBM Sprockel Bored-to-Size is manufactured as per bore size required by customer.GBM Idler Sprocket is manufactured as per bush / bearing required by customer.GBM Double Single Sprocket is manufactured as per bore size / tapered bush required by customer.

"GBM HI -Torque"Type Resilient Couplings are in use in all types of industrial applications over many years with success. Such a Resilient Coupling comprises mainly two Hubs,Grid Spring and Covers to protect the Spring. The Grid Spring element is so designed that it provides required resiliency for variable flexibility of a Coupling and considerable damping properties making the Coupling very suitable for drives involving high shock loads to the extent of 80%. Misalignment that inevitably occurs between rotating shafts, which are ndependently supported,is also taken care of by the spring element within allowable limits.

GBM Shear Pin Coupling are used to control the rated torque. The pin shears off incase the torque of the whole coupling exceeds the rated torque.GBM Shear Pin coupling assembly consists of Shear Pin, Shear pin plates, Bush, Ball Bearing, Ball Retainer.GBM Shear Pin is fastened to Shear Pin Plates (along with Bush) which in turn is fastened to the sleeves of the gear couplings. One of the plates are designed to accommodate a ball bearing which gives smoother movement of the total assembly.

Rubber Tyre Couplings comprise of rubber tyre which connects two metal hubs - one on the driving shaft and the other on the driven shaft. Rubber Tyre Couplings provide resiliency to the tyre coupling, which ultimate makes them capable of absorbing shock load, parallel misalignment upto 4mm, angular misalignment upto 4o, end float upto 5mm or combination of all misalignment depending upon the size of the coupling. Design and Construction Mounting on and dismantling from shafts can be easily accomplishedInspection of components can be carried out without dismantling of couplingTyre element can be easily replaced without disturbing the alignment of the installationNo lubrication is needed

ROTOPIN Type Couplings are in use in general industrial applications over many years and are quite useful in drives where limited misalignment of shafts is unavoidable.ROTOPIN Flexible Coupling comprises tow Hubs in Cast Iron of high quality and variable number of flexible elements, depending on the power to be transmitted. The flexible elements of rubber bushes are capable of damping vibration and shock loads as well as accepting misalignment that inevitably occurs between rotating shafts which are independently supported. ROTOPIN Flexible Coupling is suitable for rotation in either direction and does not require lubrication. Rubber used for manufacture of bushes is of high quality and works as a safeguard against any bad effect of water, dust and atmospheric conditions.

Committed to quality, we bring forth precision engineered Roto Gear Couplings. These Roto Gear Couplings are well suited for any conceivable mechanical power transmission systems in all industries. The teeth profile of Roto Gear Couplings provides good mechanical flexibility and compensation of parallel, angular and axial misalignment of the connected shafts. Roto Gear Couplings are available in following executions : Full geared flexible typeHalf geared flexible typeMill motor typeSpacer type Floating shaft typeBrake drum typeVertical type Working Principles Roto Gear Curved Tooth Couplings are suitable for any conceivable mechanical power transmission drives in all industries, large / medium / small. It is compact and lighter and thus suitablefor installation where space is a constraint. Roto Gear Couplings mainly comprises two Hubs with external machine-cut teeth of specially designed configuration, two flanged sleeves with internal teeth to match the two Hubs and a set of machine finished fasteners to both the two Flanged Sleeves when in installed position. Specially designed sealing arrangement is provided to prevent leakage of grease and ingress of outside dirt/water. Roto Gear Couplings have its components manufactured out of properly treated steels of quality which are best suited for all industrial mechanical power - transmission systems. Teeth profile are of specially designed configuration to provide ample mechanical flexibility and compensation of parallel, angular and axial misalignment of the connected shafts. Selection Select the Roto Gear Coupling of size that ill accommodate the diameter of the larger shaft of a drive.To ensure above coupling so selected has the required rating capacity : Check the service factor applicable to the drive from the service Factor ChartFind out the Rating HP/100RPM of the drive as per the folloing formula : HP X Service Factor X 100 ---------------------------------- = HP/100RPM RPM Check that the rating : HP/100 RPM of the selected Coupling is either equal to, or, great than the calculated rating as above.

GBM Manufacturing Pvt. Ltd. - a leading manufacturer of high-technology coupling and renowned for its quality products for the past 25 years, now introduces FLEXIBLE COUPLINGS, backed by the same expertise and engineering excellence. GBM flexible coupling come in four ranges - RS, RSWR, RSWS, RSS series. These flexible couplings are made out of steel / high grade of CI casting having one elastomeric rubber element and exhibit high performance, durability and longer life under the most severe conditions of operation. All series use a rubber element designed for easy fitting and replacement without shifting of either side shafts. No lubrication is needed. They are available in variety of sizes and designs corresponding to your requirements

Our Resilient Couplings consist of two Hubs, Grid Spring and Covers that protect the spring. The grid spring element provides the required resilience for variable flexibility of a coupling and considerable damping properties, which ultimately makes the Resilient Couplings suitable for drives involving high shock loads to the extent of 80%. Misalignment that occurs between rotating shafts, that are dependently supported, can also be taken care of by the spring element within allowable limits. Highlights Durable No lubrication is needed Smooth finish Efficient performance Dimensions given in the tables are approximate and pertain to Standard Coupling of GBM range, but tailor-made Couplings with Hubs of longer or shorter lengths, Seals & Grub Screws can also be supplied as per requirement of ndividual customer. Following service information must be furnished with enquires - H. P. & R. P.M. of the DriveTypes of driving & driven machinesNominal diameters and lengths of shaft extensions of both the machinesDimensional details of finished bores & keyways, if requiredAny other details relevant to the working conditions of the Drive Standard Coupling Types : X, Y, Z & S Selection of couplings : Determine service factor corresponding to the type of application under consideration from the Table of Service Factors.Determine the Maximum Horse Power = Normal rated H. P.x Service Factor of DRIVE, Determine Rating of Coupling = Maximum H.P. / Rated R P M of DRIVEAfter having determined the Rating of Coupling, check whether maximum bore and recommended speed of the Coupling correspond to the requirements of the drive. If the allowable maximum bore is too small, select a larger coupling; in case allowable safe speed is too low, a different type of Coupling will have to be considered. You may refer to GBM for recommendatio Lubrication : Indian Oil "Servogem 2", or, any equivalent grease is recommended for use. For Couplings for high speed and special application, use lubricants as will be recommended individually. Spare Parts : Parts of a Hi-Torque Resilient Coupling of particular type are interchangeable with parts of a Coupling of similar type. While ordering out spare Grid Spring or other parts, the code number/serial number stamped on the Coupling name-plate must be furnished to ensure correct supply.

Pin Bush Couplings are generally used in such industrial applications where limited misalignment of shafts is compulsory. Pin Bush Couplings have two Hubs made of cast iron and variable number of flexible elements, depending on the power to be transmitted. The flexible elements of rubber bushes are capable of damping vibration and shock loads as well as accepting misalignment that inevitably occurs between rotating shafts which are independently supported. Our Pin Bush Couplings are suitable for rotation in either direction and do not require lubrication. The provided rubber ensures safety of Pin Bush Couplings against bad effect of water, dust and atmospheric conditions. Highlights Durable Smooth finish Efficient performance No lubrication is needed

Our valued clients can avail from us Non Metallic Expansion Joints at reasonable price. Designed to perfection, Non Metallic Expansion Joints are quick, economical, long life expansion joint. Non Metallic Expansion Joints also have ability to absorb vibration and thermal expansion in hot gas duct work. Highlights Able to absorb thermal expansion and vibration in hot gas duct workSmooth finish Optimum quality Standard Roll Sizes W : 200 mm, 300 mm & 400 mm.L : 12.5 m, 25 m & 50 m. Stock - other widths to order design and installation Choosing the right roll GBM engineers will be pleased to assist in selecting the right roll for your application. However it will speed up the process if you already have the following data. Gas temperatureApplicationPressure-negative or positiveExpansion/movement (if replacement joint, size of gap to be filled)

Metallic Expansion Joints are employed where higher pressure ratings are encountered in the duct lines. Metallic Expansion Joints are precisely designed as per EJMA standards. These Metallic Expansion Joints are dye penetrant, leakage and radiographic tested. Our Metallic Expansion Joints are greatly appreciated for longer service life and ability to withstand thermal expansion and vibration in hot gas duct work. Highlights Precision design Smooth finish Able to absorb thermal expansion and vibration in hot gas duct workLeakage proof

We bring forth Jaw Type Couplings for our valued clients. Jaw Type Couplings are available with us in four ranges including RS, RSWR, RSWS, RSS series. Jaw Type Couplings are made out using steel and high grade of CI casting. Jaw Type Couplings have one elastomeric rubber element that ensures high performance and durability under the most severe conditions of operation. All four types of Jaw Type Couplings have a rubber element designed for convenient fitting and replacement without shifting of either side shafts. Highlights Durable Smooth finish No lubrication is needed Efficient performance

We offer sturdily constructed Industrial Sprockets for our valued clients. Industrial Sprockets are made of stainless steel and other required alloys. Industrial Sprockets are provided with precision designed teeth that ensure superior performance. We have made Industrial Sprockets available in different specifications to meet divergent demands of the clients. Other Information Industrial Sprockets are of standard range as per chain.Industrial Sprockets bored-to-size is manufactured as per bore size required by customer.Industrial Sprockets are manufactured as per bush / bearing required by customer.Industrial Sprockets are manufactured as per bore size / tapered bush required by customer

We are also dealing in half gear coupling, Roto Gear Couplings have its components manufactured out of properly treated steels of quality which are best suited for all industrial mechanical power - transmission systems. Teeth profile are of specially designed configuration to provide ample mechanical flexibility and compensation of parallel, angular and axial misalignment of the connected shafts.

Roto Gear Curved Tooth Couplings are suitable for any conceivable mechanical power transmission drives in all industries, large medium small. It is compact and lighter and thus suitablefor installation where space is a constraint. Roto Gear Couplings mainly comprises two Hubs with external machine-cut teeth of specially designed configuration, two flanged sleeves with internal teeth to match the two Hubs and a set of machine finished fasteners to both the two Flanged Sleeves when in installed position. Specially designed sealing arrangement is provided to prevent leakage of grease and ingress of outside dirtwater. Roto Gear Couplings have its components manufactured out of properly treated steels of quality which are best suited for all industrial mechanical power - transmission systems. Teeth profile are of specially designed configuration to provide ample mechanical flexibility and compensation of parallel, angular and axial misalignment of the connected shafts.

Firm Lock Dual Duty Pulleys GBM Dual Duty Firm Lock Pulleys are standard range of metric pulleys as they eliminate reboring and keywaying. These pulleys need not be finished according to different bore and keyway. Firm Lock Bushes hold the shafts firm and easy to dismantle when necessary. Pulleys are manufactured from graded cast iron conforming to IS 3142 : 1993 to match V - Belts manufactured by reputed V - Belt manufacturers. Advantages of Firm Lock Bushes No reboring and keywaying Available in 251 sizes. Eliminates precision taper fitting keys. Accommodates shaft limits of + 0.051mm./-0.127mm. The Pulleys are suitable for use with following V-Belts Z & SPZ Belts A & SPA Belts B & SPB Belts C & SPC Belts

Brake Drum couplings serve dual purpose of flexible coupling as well as providing brakedrum for mounting brake within the same space. The coupling can be used with all kinds of brakes with shoes; Electromagnetic, Thruster, Band etc. The material of the couplings is high grade Cast Iron / Cast Steel. 

Designed to excellence, Disc Couplings are non-lubricated coupling for pumps, compressors, fans and blowers, refrigeration and air-conditioning equipment and other rotating equipment. Disc Couplings have sturdy construction, which signifies their ability to withstand pressure. Moreover, Disc Couplings have precision engineered design which makes them compatible with advanced rotating equipment. Working Principle Disc Couplings transmit mechanical power to driven machines through shaft mounted hubs connected by the coupling and flexible disc packs. Both angular and axial misalignment are accommodated by the flexible disc packs Rotodisc Flexible Couplings, for medium duty applications requiring moderate shaft separations consist of three main parts. HUBS 2 in numbers,SS. SHIMS 1 Pack / 2 PacksHigh tensile steel fasteners Highlights Sturdy construction Resistance against corrosion Precision engineering Accurate dimensions