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HercuFlex(TM) Gear Coupling Catalog

HercuFlex(TM) Gear Coupling Catalog
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HercuFlex(TM) Gear Coupling Catalog

Product catalog summary
Introduction
This document serves as a comprehensive guide for selecting and understanding the specifications of Lovejoy's HercuFlex gear couplings, including the FX, CX, FXL, and RA/RAHS series. It covers factors affecting selection, steps for choosing a gear coupling, and detailed specifications for the FX Series.
Factors Affecting Selection
Selection depends on application details, motor type, horsepower or KW, operating speed, shaft sizes, space constraints, environmental conditions, balance requirements, and special modifications.
Steps in Selecting a Gear Coupling
1. Ensure the gear coupling series and type meet application requirements.
2. Calculate nominal application torque using the formula: Application Torque (in-lb) = (HP x 63025) / RPM or Nm = (KW x 9550) / RPM.
3. Determine the service factor number from the Application Service Factor chart and multiply it by the application torque to find the total torque required.
4. Compare the required total torque with the nominal torque capacity in the Gear Coupling Selection chart.
5. Ensure the maximum bore size and RPM of the selected coupling meet application requirements.
6. Note any special requirements and consult with Lovejoy for unique applications.
FX Series Specifications
The FX Series offers advanced design improvements such as increased nominal torque, larger maximum bore size, and longer service life. Key features include:
- Unequaled bore and torque capacity
- 1.5° of misalignment per gear mesh
- Improved fastener corrosion resistance
- Advanced seal design for contamination resistance
- Interchangeability with standard AGMA flange interface
Dimensional Data
Detailed measurements for hub dimensions, sleeve and bolt dimensions, and additional dimensional data are provided, including bore sizes, bolt circle diameters, and thread sizes for various coupling sizes.
Product Features
Key features of the RA and RAHS couplings include axial positioning, clearance fit bores, and removable spacers for easy maintenance. Stainless steel options are available.
Performance Data
Includes performance data for motor and pump hubs, detailing horsepower, nominal thrust, and torque capacities for different sizes.
Ordering Information
Guidelines for ordering couplings include application details, power requirements, speed, shaft sizes, and adjusting nut threads.
Lubrication
Emphasizes the importance of proper lubrication, specifically with Lovejoy Gear Coupling Grease, designed to resist centrifugal separation and extend coupling life.
Product Overview
Lovejoy Gear Coupling Grease adapts its consistency based on operating conditions, becoming semi-fluid during use to lubricate wear surfaces effectively and returning to its original state upon cooling to prevent leakage.
Specifications
  • NLGI Grade: 0/1
  • Appearance: Dark Brown, Tacky
  • Composition: 10% Lithium Soap/Polymer
  • Viscosity: >3200 cST at 40°C, >50 cSt at 100°C
  • Penetration: 350 Dmm worked, 10% change after 10,000 strokes
  • Dropping Point: 320°F (160°C)
  • Centrifugal Oil Separation: None
  • Water Spray-Off: >3%
  • Rust Protection: Pass
  • Timken OK Load: 40+ lbs
  • Four-Ball EP Load Wear Index: 68 kgf, Weld Point: 400 kgf
  • Four-Ball Wear: 0.4 mm
  • Temperature Range: Min -20°F (-29°C), Max 250°F (121°C) continuous, 325°F (163°C) short exposure
Features
  • Minimizes coupling wear
  • Resistant to water washing and corrosion
  • High load carrying capabilities
  • Extended relubrication frequency
  • Operates at high speeds and temperatures up to 325°F
  • Reduces downtime and maintenance costs
Usage Instructions
Follow the Lovejoy catalog for proper selection, sizing, and installation. Avoid exceeding catalog ratings and ensure proper alignment and inspection of the coupling assembly.
Safety Precautions
Install suitable guards as per OSHA and ASME standards. Do not use for elevators or devices carrying people. Contact Lovejoy Engineering for any queries.
Warranty
Lovejoy warrants products to be free from defects at delivery. Defective products can be returned for repair or replacement. The warranty excludes special, incidental, or consequential damages and is void if unauthorized repairs are made.
Contact Information
Lovejoy, Inc. World Headquarters, 2655 Wisconsin Avenue, Downers Grove, IL 60515, USA. Phone: 630-852-0500, Email: [email protected]
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Catalog excerpts

HercuFlex(TM) Gear Coupling Catalog-1

FX Series CX Series FXL Series RA/RAHS Series The Reinvention of the Gear Coupling

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HercuFlex(TM) Gear Coupling Catalog-2

Gear Coupling Selection Process Factors Affecting Selection The following is a list of the information necessary to assist in making a coupling selection. Not all of these items will come into play in all selection processes. These items include, but are not limited to: • Application details • Type of motor and driven equipment • Motor horsepower or KW • Operating/coupling speed • Shaft sizes and separation • Space and size constraints • Environment (temperature, chemicals, etc) • Balance requirements • Special modifications Steps In Selecting A Gear Coupling Refer to the gear coupling specifications...

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HercuFlex(TM) Gear Coupling Catalog-3

Notes: • 1 indicates: If people are transported, Lovejoy does not recommend and will not warranty the use of the coupling. • alues contained in the table should be used as a general guide and are to be applied to smooth power sources such V as electric motors and steam turbines. • or drives involving internal combustion engines add 1.0 to the values listed. F

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HercuFlex(TM) Gear Coupling Catalog-4

FX Series Flange Style Gear Coupling By incorporating the latest advances in Finite Element Analysis technology, Lovejoy has revolutionized the Gear Coupling. Increased nominal torque, larger maximum bore size and longer service life are just a few of the many advantages of the FlercuFlex coupling. Despite the advanced nature of these improvements, the FlercuFlex Gear Coupling still utilizes the standard AGMA flange interface to ensure field interchangeability. Key Features • Unequaled bore and torque capacity • 1.5° of misalignment per gear mesh • Improved fastener corrosion resistance • Advanced...

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HercuFlex(TM) Gear Coupling Catalog-5

LTBLTB BSEBSE HDHD D D FD FD FX Dimensions (Standard Hubs) P CL OAL (in)

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HercuFlex(TM) Gear Coupling Catalog-6

HERCUFLEX CX Series Continuous Sleeve Style Gear Coupling The HercuFlex coupling family has expanded to include the continuous sleeve gear coupling. Utilizing the same industry leading design expertise as seen in the FX style, Lovejoy has incorporated multiple innovations to yield previously unseen bore and torque capacity in the Continuous Sleeve gear coupling segment. Key Features • Unequaled bore and torque capacity • 1.5° of misalignment per gear mesh • Improved hardware corrosion resistance • Advanced seal design intensifying contamination resistance

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HercuFlex(TM) Gear Coupling Catalog-7

A HercuFlexby Lovejoy 1 Hub Reversed CX Dimensions (Standard Hubs) lovejoy-inc.com HercuFlex

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HercuFlex(TM) Gear Coupling Catalog-8

FXL Series Labyrinth Seal Flanged Gear Coupling In extreme high contamination environments, Lovejoy has transformed the HercuFlex coupling to integrate an advanced seal design when performance degradation is not tolerable. This advanced gear coupling still encompasses the torque and misalignment capacities that make the HercuFlex coupling an industry leader. Key Features • Unequaled bore and torque capacity • 1.5° of misalignment per gear mesh • Improved fastener corrosion resistance • Advanced seal design intensifying contamination resistance • Interchangeable with standard AGMA flange interface...

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HercuFlex(TM) Gear Coupling Catalog-9

OAL FXL Dimensions (Standard Hubs) THESE ARE THE CX DRAWINGS TS OAL OAL LTB STILL NEED THE FXL NORMAL,LTB (in) (in) CL 1 HUB AND (mm) REVERSED(mm) 2 HUB 7 OAL 1 E THE CX DRAWINGS TS ED THE FXL NORMAL, Size ND 2 HUB REVERSED 220.7 0.38 13.54 OAL 2 9.7 THESE ARE THE CX DRAWINGS TS STILL NEED FD FXL NORMAL, TS THE FD TS (in) (mm) (in) 1 HUB AND 2 HUB REVERSED (mm)

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HercuFlex(TM) Gear Coupling Catalog-10

EXPOSED BOLTS Lovejoy® HercuFlex Gear Coupling Flange Interchangeability* Torque Rating (in-lb) Torque Rating (in-lb) Max Max Bore Bore (in) (mm) Size Torque Rating (in-lbf) Torque Rating (in-lbf) SHROUDED BOLTS Torque Rating (in-lb) Torque Rating (in-lb) Torque Max Max Rating Bore Bore (in-lbf) (in) (mm) Max Max Bore Bore (in) (mm) Size Torque Rating (in-lbf) Torque Rating (in-lbf) Torque Max Max Rating Bore Bore (in-lbf) (in) (mm) 1.625 *Note: Special fasteners may be required.

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HercuFlex(TM) Gear Coupling Catalog-11

Kop-Flex® FAST Torque Rating (in-lbf) Kop-Flex® Waldron® Series Max Max Bore Bore (in) (mm) Size Torque Rating (in-lbf) Max Max Bore Bore (in) (mm) Size Torque Rating (in-lbf) Renold® Ajax® Series Torque Rating (in-lbf) Torque Rating (in-lbf) Kop-Flex® FAST Kop-Flex® Waldron® Series Torque Rating (in-lbf) Max Max Bore Bore (in) (mm) Size 1 Torque Rating (in-lbf) Torque Rating (in-lbf) Renold® Ajax® Series Torque Rating (in-lbf) Torque Rating (in-lbf)

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HercuFlex(TM) Gear Coupling Catalog-12

Additional Dimensional Data Hub Dimensions Flex Hub Puller Bolt Holes

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HercuFlex(TM) Gear Coupling Catalog-13

Sleeve and Bolt Dimensions

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HercuFlex(TM) Gear Coupling Catalog-14

RA and RAHS Type Rigid Adjustable Couplings The RA and RAHS couplings are offered in two different styles. Type II coupling consists of two rigid hubs, adjusting nut and split ring and split ring for motor bub. Type IV coupling consists of two rigid hubs, adjusting nut, and split ring for motor hub and spacer. Key Features • Axial positioning of the pump impeller in vertical pump applications • Clearance fit bores allows for easy installation and maintenance for pump and/or motor • Easily adjustable for vertical clearance • Removable spacer for easy maintenance • AISI 1045 Steel • Stainless Steel...

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HercuFlex(TM) Gear Coupling Catalog-15

Ordering Information • Clearance fit bores with set screw are standard. • RA couplings meet standard tolerances. • Inch bore and keyway tolerances conform to AINSI / AGMA 9002-B04. • For metric bore and keyway tolerances, consult Lovejoy Application Engineering. • RAHS couplings conform to API 610 8th edition tolerances.

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HercuFlex(TM) Gear Coupling Catalog-16

HERCUFLEX CONTINUOUS SLEEVE COUPLINGS HercuFlex Continuous Sleeve Gear Couplings Vertical Floating Shaft Type The upper coupling is a Standard Vertical Type coupling. The lower coupling has a hardened crowned button inserted in the plate of the lower hub and a hardened flat button inserted in the plate of the upper hub. The entire floating assembly rests on these two buttons which carry the weight of the floating assembly thus maintaining the spacing between the two lower hubs allowing for flexibility. The hubs on the floating shaft are flexible and the hubs of the driver and driven shafts are...

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.