Maintenance Technology June 2015 - (Page 32)
TECHNOLOGY SHOWCASE
1 HIGHER-THRUST SPUR GEARBOX
Rotork's recently introduced IS21 gearbox adds higher
thrust ratings to the company's established lineup of
multi-turn, thrust-taking, spur gearboxes. Retaining most
parts of the Rotork IS20 design, the IS21 incorporates a new
F60 cast-ductile-iron thrust base, thrust bearings, spigot ring,
and output sleeve. Thrust ratings have increased to 4,350 kN for
manual operation and 2,900 kN for motorized operation, or 30%
more than the previous maximums. Corresponding maximum output
torques have increased to 4,6100 Nm and 43,386 Nm, respectively.
Suitable for the operation of gate, globe,
and sluice valves; penstocks; and
designed with customer stocking
in mind, all IS gearboxes
feature removable output
sleeves for separate
spindle machining.
The units' standard
IP67 watertight
and temporarily
submersible
enclosures can
be optionally increased to IP68, and the standard
operating-temperature range of -40 to 120 C can be
expanded to suit specific high- or low-temperature
demands.
MECHANICAL
&HYDRAULIC
SOLUTIONS
Rotork plc
Bath, UK
rotork.com
2 NEXT-GEN TEFC VERTICAL MOTORS
Baldor has launched a new above-NEMA vertical P-base motor platform.
The Totally Enclosed Fan Cooled (TEFC) G series is available in a power
range of 200 to 900 hp, in frame sizes 5,010 to 5,012, at a variety of voltage
ratings including 460, 2,300, 4,160, and 6,600. The entire platform has
a cast-iron frame with a steel fan cover, and TEFC Enclosure in a more
compact design than the previous generation. Designed for pumping and
fan applications, the units meet standard NEMA-specified P-base dimensions for vertical-pump applications or horizontal mount for tunnel-fan
applications. The G-series models feature a grease-lubricated ball bearing
on the drive end with a thrust bearing on the upper (non-drive end) as
standard. Oil lubrication and different bearing arrangements are optional
features for applications subject to heavy loading. Options such as certifications to meet oil & gas-industry needs, including IEEE841 to
500 hp, API541 and API547 above 500 hp are available, as are nonreversing ratchets that control motor backspin upon de-energization to
protect an entire pumping system.
Baldor Electric Co.
Fort Smith, AR
baldor.com
32 |
MAINTENANCE TECHNOLOGY
JUNE 2015
http://www.rotork.com
http://www.baldor.com
Table of Contents for the Digital Edition of Maintenance Technology June 2015
My Take
Uptime
For On The Floor
Compressed Air Challenge
News
Friction, Fluid Optimize High-Inertia Systems
Improved Culture Cuts Downtime
Maximimize Power-Plant Skills
Gateways Make Systems Multilingual
Technology Showcase
Products
Marketplace
Lubrication Checkup
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