Amerigear® Gear Couplings Standard and Modified Designs
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Amerigear Gear Couplings ® Standard and Modified Designs

Crowned Flanks Flanks of the teeth are crowned so that tooth thickness is greatest at the center of the tooth. This assures larger contact area per tooth for higher torque requirements and puts more teeth in contact for a given angle. Actual tooth loading takes place near the center of the tooth face where tooth thickness is greatest. Crowned flanks also eliminate end-oftooth loading, provide optimum load distribution, and accommodate all types of misalignment with minimum backlash, while transmitting constant velocity. This design provides good oil film characteristics for efficient...

Design Advantages The Flexible Coupling method of connecting rotating shafts is a vital and necessary technique. Large massive shafting, loosely mounted in sleeve bearings and merely joined together by rigidly bolted flanges, cannot provide efficient mechanical power transmission. Especially today, as machine designers and builders demand higher speeds, higher torques, and higher misalignment capacities, the need for “flexibly connecting” this equipment becomes apparent. A flexible coupling is necessary since it is practically impossible to achieve and maintain perfect alignment of coupled...

Design Advantages Amerigear® Amerigear Fully-Crowned Teeth (Fig. 1) Crowned Flanks, Crowned Tips, Crowned Chamfers — recognized as the ultimate in gear tooth design and the secret of superior mechanical power transmission! Increased tooth contact area improves the load-carrying capacity of the teeth regardless of operating conditions and provides “balland-socket” piloting action at all misalignments. As a result, connected equipment is able to operate at higher torques, speeds, and misalignments with resultant longer life. Rigid, strong, “floating” sleeve (Fig. 2) A floating sleeve,...

Ordering Information 1. Obtain Shaft Sizes Compare shaft sizes of driving and driven equipment with listed maximum bores of desired Series or Type coupling to determine “tentative” coupling size. NOTE: Maximum bores are listed on pages 8 and 9 for F Type couplings and on page 29 for C Type couplings. Both Series F and Series C, Size 202 have capacities of 50 HP/100 RPM. Note: Series F and Series C, Size 202 will accommodate a 23/4” shaft with standard square key. In this example, the rating of 50 HP/100 RPM provides a large margin of safety. Recommended Service Factors (S.F.) In order to...

Ordering Information When Ordering, Specify Following Information Recommended Bore Tolerances 1. Quantity and delivery requirements. • Recommended standard bore tolerances for interference and clearance fits are shown in Tables A and B respectively. 2. Shaft or bore sizes and keyway dimensions. Give exact dimensions with tolerances. 3. Load — horsepower and/or torque at a specific RPM. State normal and maximum conditions. 4. Speed — minimum, normal and maximum. • Bore tolerances conform to AGMA 9002-A86 standards. Interference Fits Unless specified, bores will be furnished with an...

Series F Flexible Couplings Sizes 200-207 Flanged Sleeve — Double-Engagement Type Application: Meets requirements of all standard applications for shaft sizes up to 10.25 diameter. Compensates for all three types of misalignment. Lube Plug 2 @ 180˚ Each Flange E G * Sizes 200, 201 and 2011/4 flange fasteners are self-locking socket head cap screws - one flange tapped. Sizes 2011/2-2051/2 have exposed bolts (EB) with self-locking nuts; shrouded bolts (SB) upon request — no additional cost. **Clearance for aligning coupling. Sizes 206 AND 207 have exposed bolts (EB) with self-locking nuts....

Series F Flexible Couplings Sizes 208-230 Flanged Sleeve — Double-Engagement Type Application: Meets requirements of severe service conditions and larger shaft sizes up to 46” diameter. Compensates for all three types of misalignment. Description: Heavy-duty Amerigear Series F Flexible Coupling (Sizes 208230) contains the same basic design features as Series F (Sizes 200-207), described on page 8 . . . however, misalignment capacity is ± 3/4°. Major components are fully-machined from medium carbon steel. DIA. Optional Bolt Thru Seal Retainer Lube Plug 2 @ 180˚ Each Flange *If higher torque...

Series FS Flexible Couplings Sizes 200-207 Flanged Sleeve — Single-Engagement Type Application: Used primarily in tandem pairs, connected by intermediate floating shaft or as individual unit in conjunction with a driver or driven shaft having a self-aligning support bearing. When used singly, compensates for angular misalignment only. Description: Amerigear Series FS Flexible Coupling consists of one standard flexible half coupling and one rigid half. The bolted center flanges facilitate installation and alignment. If used in tandem assemblies, see page 24 for shaft sizes and page 37 for...

LOAD CAPACITY* Optional Bolt Thru Seal Retainer Optional Bolt Through Seal Retainer For flexible hub bore capacity (page 9) and puller hole data (page 40) use information for series F. If used in tandem assemblies, consult Ameridrives for shaft size and speed limits *Maximum distance from bottom of keyway to bore axis. Reference drawing on page 40.

Series FM, FS Flexible Couplings Sizes 201 1/2 - 206 Flanged Sleeve — Double- and Single-Engagement Mill Motor Type Application: Designed for modern mill motor applications and standards demanding quick change-out of equipment for continuous and uninterrupted operation. Description: Amerigear Series FM and FMS Flexible Couplings are designed with bolted center flanges to facilitate installation and alignment. Optimum separation of gear meshes permits relatively high parallel offset capacity. Flanged-sleeve design makes possible minimum distances between bearing housings to facilitate shaft...

Series FM, FS Flexible Couplings Sizes 201 1/2 - 206 VARIABLE DIMENSIONS G FM FMS FM, FMS AISE H Bore Size Frame No. C´ O K J Keyway @Large End D´ E´ D2 E2 2011/2 602 802 3.16 — .16 2.81 x .250 .500 1.7485/1.7495 .91 6.00 .94 5.88 All mill motor flanges have exposed bolts (EB). Maximum bore, keyway and puller hole data, page 40. For frame sizes not shown in AISE column and for other taper bore applications, size coupling using load capacities on page 12 and service factors on page 6. Modifications and variations, pages 23-28. Maximum speeds, page 34.