Thomas Disc Coupling

Thomas Disc Couplings and Flexible Disc Packs
Thomas Disc Couplings and Flexible Disc Packs are engineered for infinite life and
optimized for motor, engine and turbine-driven applications. Rexnord's experience and
dedication to conservative design standards ensure customers the maximum reliability on
the most critical power train systems. Our engineers also work with customers to
accommodate unique system operating characteristics.

Additional information

Benefits	– Allows for visual inspection and easy replacement of disc packs and center members – Zero backlash, low restoring forces, electrically insulated designs – More than 25 sizes – 18 engagement, disconnect, brake and shear pin options – Up to 15.5 inches (394 mm) bore capacity – Up to 3,390,000 in-lb (383,019 Nm) torque capacity – Up to 20,000 rpm – Meets API 671 or API 610 specifications
Technical data	Rexnord AMR Thomas Disc Couplings The Rexnord Thomas AMR coupling is ideal for heavy-duty, slow to medium speed applications, where high-starting torque, shock loads, torque reversals or continuous alternating torques are present. Typical applications include motor and turbine driven pumps, compressors, fans, synchronized rollers, wire feeders and blowers. Rexnord CMR Thomas Disc Couplings Typical applications include engine and motor driven reciprocating compressors, Motor and turbine driven pumps, fans, synchronized rollers, wire feeders, blowers or any application driven through a flywheel adapter. Rexnord C-Style Miniatures Thomas Disc Couplings The Rexnord Thomas Miniature Couplings are a range of high precision couplings for low horsepower applications. The clamping hubs assure a positive fit on the shafts with no loose parts to handle during installation. Rexnord DBZ Thomas Disc Couplings The Rexnord Thomas DBZ disc coupling is a legacy general purpose high-speed, high- torque coupling. Typical applications include mixers, compressors, agitators, blowers& fans, centrifugal pumps and conveyors. Rexnord DBZ-A Thomas Disc Couplings The Rexnord Thomas DBZ-A disc coupling is a legacy general purpose high-speed, high- torque coupling. Typical applications include mixers, compressors, agitators, blowers& fans, centrifugal pumps and conveyors. Rexnord DBZ-B Thomas Disc Couplings The Rexnord Thomas DBZ-B disc coupling is a legacy general purpose high-speed, high- torque coupling. Typical applications include mixers, compressors, agitators, blowers& fans, centrifugal pumps and conveyors. Rexnord DBZ-C Thomas Disc Couplings The Rexnord Thomas DBZ-C disc coupling is a legacy general purpose high-speed, high-torque coupling. Typical applications include mixers, compressors, agitators, blowers& fans, centrifugal pumps and conveyors. Rexnord S52 Thomas Disc Couplings The Rexnord Thomas Series 52 couplings are all-purpose high-speed, high-torque couplings used where minimum coupling weight is desirable. They are commonly used on motor and turbine driven pumps, compressors and fans Rexnord S54RD Thomas Disc Couplings The Rexnord Thomas Series 54RD couplings are specifically designed as replacements for close-coupled gear and grid couplings, and where overall shaft-to-shaft spacing is minimal. Materials of construction are identical to the Series 52. Stainless steel disc packs are supplied as standard. To reduce maintenance costs, the Series 54RD is furnished with an axially split center member. This design permits the removal of the disc packs without moving the connected equipment. Rexnord S54RDG Thomas Disc Couplings The Rexnord Thomas Series 54RDG couplings are reduced diameter gear and grid replacement couplings. Applications include any situation where the overall shaft-to-shaft spacing is minimal. Rexnord S71 Thomas Disc Couplings The Rexnord Thomas S71 spacer type disc coupling is a general purpose high-speed, high-torque coupling designed applications requiring spacer-type couplings such as ANSI, API and other similar process pumps. Series 71 couplings are most commonly used on motor, turbine and gear driven pumps, compressors and blowers and when specified can meet all API 610 or API 671 Rexnord S71-8 Thomas Disc Couplings The Rexnord Thomas S71-8 spacer type disc coupling is a general purpose high-speed, high-torque coupling designed applications requiring spacer-type couplings such as ANSI, API and other similar process pumps. Series 71-8 couplings are most commonly used on motor, turbine and gear driven pumps, compressors and blowers and when specified can meet all API 610 or API 671 requirements. The Series 71-8 is characterized by a simple three-piece design with a unitized center member assembly and two piloted hubs, available as Black Oxide, Zinc, Cadmium or Manganese Phosphate coated.. Rexnord XTSR52 Thomas Disc Couplings The Rexnord Thomas XTSR52 spacer disc coupling is a general purpose high-speed, high-torque coupling used where minimum coupling weight is desirable. The Thomas XTSR52 couplings are API 610 and ISO 14691 compliant when specified as well as ATEX II 2GD c T6 certified. Typical applications include motor and turbine driven pumps, compressors, fans, synchronized rollers, wire feeders and blowers. XTSR52 couplings are compatible with one, two or three sizes larger hubs and available in 21 sizes ranging from 726 through 5258. Rexnord XTSR71 Thomas Disc Couplings The Rexnord Thomas XTSR71 spacer disc coupling is a high performance 3-piece design enabling compact packaging for critical operating conditions including API applications. The Thomas XTSR71 couplings are API 610, ISO 14691, and API 671 (ISO 10441) compliant when specified as well as ATEX II 2GD c T6 certified. Typical applications include motor and turbine driven pumps, compressors, fans, synchronized rollers, wire feeders and blowers. XTSR71 couplings are compatible with one or two sizes larger hubs and available in 21 sizes ranging from 726 through 5258.

Benefits

– Allows for visual inspection and easy replacement of disc packs and center members
– Zero backlash, low restoring forces, electrically insulated designs
– More than 25 sizes
– 18 engagement, disconnect, brake and shear pin options
– Up to 15.5 inches (394 mm) bore capacity
– Up to 3,390,000 in-lb (383,019 Nm) torque capacity
– Up to 20,000 rpm
– Meets API 671 or API 610 specifications

Technical data

Rexnord AMR Thomas Disc Couplings
The Rexnord Thomas AMR coupling is ideal for heavy-duty, slow to medium speed
applications, where high-starting torque, shock loads, torque reversals or continuous
alternating torques are present. Typical applications include motor and turbine driven
pumps, compressors, fans, synchronized rollers, wire feeders and blowers.
Rexnord CMR Thomas Disc Couplings
Typical applications include engine and motor driven reciprocating compressors, Motor
and turbine driven pumps, fans, synchronized rollers, wire feeders, blowers or any
application driven through a flywheel adapter.
Rexnord C-Style Miniatures Thomas Disc Couplings
The Rexnord Thomas Miniature Couplings are a range of high precision couplings for low
horsepower applications. The clamping hubs assure a positive fit on the shafts with no
loose parts to handle during installation.

Rexnord DBZ Thomas Disc Couplings
The Rexnord Thomas DBZ disc coupling is a legacy general purpose high-speed, high-
torque coupling. Typical applications include mixers, compressors, agitators, blowers&
fans, centrifugal pumps and conveyors.

Rexnord DBZ-A Thomas Disc Couplings
The Rexnord Thomas DBZ-A disc coupling is a legacy general purpose high-speed, high-
torque coupling. Typical applications include mixers, compressors, agitators, blowers&
fans, centrifugal pumps and conveyors.
Rexnord DBZ-B Thomas Disc Couplings
The Rexnord Thomas DBZ-B disc coupling is a legacy general purpose high-speed, high-
torque coupling. Typical applications include mixers, compressors, agitators, blowers&
fans, centrifugal pumps and conveyors.
Rexnord DBZ-C Thomas Disc Couplings
The Rexnord Thomas DBZ-C disc coupling is a legacy general purpose high-speed,
high-torque coupling. Typical applications include mixers, compressors, agitators,
blowers& fans, centrifugal pumps and conveyors.

Rexnord S52 Thomas Disc Couplings
The Rexnord Thomas Series 52 couplings are all-purpose high-speed, high-torque
couplings used where minimum coupling weight is desirable. They are commonly used
on motor and turbine driven pumps, compressors and fans
Rexnord S54RD Thomas Disc Couplings
The Rexnord Thomas Series 54RD couplings are specifically designed as replacements
for close-coupled gear and grid couplings, and where overall shaft-to-shaft spacing is
minimal. Materials of construction are identical to the Series 52. Stainless steel disc
packs are supplied as standard. To reduce maintenance costs, the Series 54RD is
furnished with an axially split center member. This design permits the removal of the disc
packs without moving the connected equipment.
Rexnord S54RDG Thomas Disc Couplings
The Rexnord Thomas Series 54RDG couplings are reduced diameter gear and grid
replacement couplings. Applications include any situation where the overall shaft-to-shaft
spacing is minimal.
Rexnord S71 Thomas Disc Couplings
The Rexnord Thomas S71 spacer type disc coupling is a general purpose high-speed,
high-torque coupling designed applications requiring spacer-type couplings such as
ANSI, API and other similar process pumps. Series 71 couplings are most commonly
used on motor, turbine and gear driven pumps, compressors and blowers and when
specified can meet all API 610 or API 671
Rexnord S71-8 Thomas Disc Couplings

The Rexnord Thomas S71-8 spacer type disc coupling is a general purpose high-speed,
high-torque coupling designed applications requiring spacer-type couplings such as
ANSI, API and other similar process pumps. Series 71-8 couplings are most commonly
used on motor, turbine and gear driven pumps, compressors and blowers and when
specified can meet all API 610 or API 671 requirements. The Series 71-8 is characterized
by a simple three-piece design with a unitized center member assembly and two piloted
hubs, available as Black Oxide, Zinc, Cadmium or Manganese Phosphate coated..
Rexnord XTSR52 Thomas Disc Couplings
The Rexnord Thomas XTSR52 spacer disc coupling is a general purpose high-speed,
high-torque coupling used where minimum coupling weight is desirable. The Thomas
XTSR52 couplings are API 610 and ISO 14691 compliant when specified as well as
ATEX II 2GD c T6 certified. Typical applications include motor and turbine driven pumps,
compressors, fans, synchronized rollers, wire feeders and blowers. XTSR52 couplings
are compatible with one, two or three sizes larger hubs and available in 21 sizes ranging
from 726 through 5258.

Rexnord XTSR71 Thomas Disc Couplings
The Rexnord Thomas XTSR71 spacer disc coupling is a high performance 3-piece
design enabling compact packaging for critical operating conditions including API
applications. The Thomas XTSR71 couplings are API 610, ISO 14691, and API 671 (ISO
10441) compliant when specified as well as ATEX II 2GD c T6 certified. Typical
applications include motor and turbine driven pumps, compressors, fans, synchronized
rollers, wire feeders and blowers. XTSR71 couplings are compatible with one or two
sizes larger hubs and available in 21 sizes ranging from 726 through 5258.