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OTC

OTC (Owens Tool Company) is a manufacturer of industrial maintenance tools and equipment, headquartered in Owatonna, Minnesota, USA. The brand has been in operation since 1925 and is recognized for its range of pullers, bearing splitters, lock nut sockets, and hydraulic pumps used in vehicle repair, heavy equipment maintenance, and industrial assembly. OTC products are designed for applications requiring controlled force application, such as bearing removal and installation, gear pulling, and hydraulic pressure generation. The product line includes mechanical and hydraulic pullers, bearing splitters, lock nut sockets in SAE and metric sizes, and portable electric hydraulic pump units. OTC pullers are available in various configurations, including two- and three-jaw pullers, push-pullers, and slide hammer pullers, with capacities ranging from 1 ton to 10 tons. Bearing splitters from OTC feature spread ranges from 1/2 inch to 5 3/4 inches, with tapped hole thread sizes such as 5/8\"-18, and are constructed from forged steel for durability. Lock nut sockets are offered in drive sizes from 1/2 inch to 1 inch, with socket sizes from 2 1/4 inches to 5 1/4 inches, and are available in deep, 6-point configurations with unfinished or black oxide finishes. Hydraulic pumps, such as the model 4044, deliver maximum operating pressures up to 10,000 psi and displacements of 45 cubic inches per minute at that pressure, with 2-way valve control. OTC products are built to meet standard industrial specifications for torque and pressure ratings, and they are commonly used in automotive, truck, agricultural, and construction equipment maintenance. 3G Electric supplies OTC pullers, lock nut sockets, bearing splitters, and hydraulic pumps globally, with a catalog of 173 SKUs. Each product is accompanied by datasheets that include dimensional specifications, capacity ratings, and compatibility information. 3G Electric provides logistics support for international shipping, ensuring that OTC tools are available to plant engineers, maintenance managers, and procurement specialists worldwide. The product range covers both SAE and metric configurations, allowing for use on a variety of equipment types. OTC tools are designed for repeated use in shop environments, with materials and finishes that resist corrosion and wear. The brand's focus on mechanical advantage and precision fit makes its products suitable for tasks where controlled force application is critical to avoid component damage.

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About OTC

OTC (Owens Tool Company) is a manufacturer of industrial maintenance tools and equipment, headquartered in Owatonna, Minnesota, USA. The brand has been in operation since 1925 and is recognized for its range of pullers, bearing splitters, lock nut sockets, and hydraulic pumps used in vehicle repair, heavy equipment maintenance, and industrial assembly. OTC products are designed for applications requiring controlled force application, such as bearing removal and installation, gear pulling, and hydraulic pressure generation. The product line includes mechanical and hydraulic pullers, bearing splitters, lock nut sockets in SAE and metric sizes, and portable electric hydraulic pump units. OTC pullers are available in various configurations, including two- and three-jaw pullers, push-pullers, and slide hammer pullers, with capacities ranging from 1 ton to 10 tons. Bearing splitters from OTC feature spread ranges from 1/2 inch to 5 3/4 inches, with tapped hole thread sizes such as 5/8\"-18, and are constructed from forged steel for durability. Lock nut sockets are offered in drive sizes from 1/2 inch to 1 inch, with socket sizes from 2 1/4 inches to 5 1/4 inches, and are available in deep, 6-point configurations with unfinished or black oxide finishes. Hydraulic pumps, such as the model 4044, deliver maximum operating pressures up to 10,000 psi and displacements of 45 cubic inches per minute at that pressure, with 2-way valve control. OTC products are built to meet standard industrial specifications for torque and pressure ratings, and they are commonly used in automotive, truck, agricultural, and construction equipment maintenance. 3G Electric supplies OTC pullers, lock nut sockets, bearing splitters, and hydraulic pumps globally, with a catalog of 173 SKUs. Each product is accompanied by datasheets that include dimensional specifications, capacity ratings, and compatibility information. 3G Electric provides logistics support for international shipping, ensuring that OTC tools are available to plant engineers, maintenance managers, and procurement specialists worldwide. The product range covers both SAE and metric configurations, allowing for use on a variety of equipment types. OTC tools are designed for repeated use in shop environments, with materials and finishes that resist corrosion and wear. The brand's focus on mechanical advantage and precision fit makes its products suitable for tasks where controlled force application is critical to avoid component damage.

Common Applications

  • Automotive repair — OTC bearing splitters (model 1124) for removing bearings from transmission shafts
  • Heavy equipment maintenance — OTC hydraulic electric pump (model 4044) for powering hydraulic cylinders in press applications
  • Truck wheel service — OTC Budd Wheel Socket (MPN 1948A) for removing and installing lug nuts on commercial vehicles
  • Industrial assembly — OTC lock nut sockets (MPN 1939) for tightening SAE lock nuts on machinery
  • Agricultural equipment repair — OTC puller set (model 4518) for extracting gears and pulleys from tractor components
  • Construction equipment maintenance — OTC drive socket set (MPN 4542) for servicing metric and SAE fasteners on excavators

Frequently asked questions

Common questions about OTC from 3G Electric.

What is the maximum operating pressure of OTC hydraulic electric pumps like the model 4044?

The OTC model 4044 hydraulic electric pump has a maximum operating pressure of 10,000 psi. At this pressure, it delivers a displacement of 45 cubic inches per minute. The pump features a 2-way valve for controlling cylinder extension and retraction. It is a corded, portable unit designed for high-power applications in industrial and automotive settings.

Are OTC lock nut sockets available in metric sizes?

Yes, OTC offers lock nut sockets in metric sizes. For example, the OTC Budd Wheel Socket (MPN 1948A) has a 33 mm socket size with a 1-inch drive. OTC also provides SAE & Metric Lock Nut Socket Sets, such as the 7-piece set (MPN 4542) that includes sockets ranging from 55 mm to 2-3/8 inches. These sockets are 6-point, deep, and available with black oxide or unfinished finishes.

What is the pulling capacity of the OTC 4518 bearing splitter and push-puller set?

The OTC 4518 bearing splitter and push-puller set has a pulling capacity of 5 tons. It includes 13 pieces, a 6-1/4 inch forcing screw, and various screw sizes. The set is designed for bearing splitting and push-puller applications, making it suitable for removing bearings, gears, and pulleys in maintenance tasks.

What is the minimum and maximum spread of the OTC bearing splitter model 1124?

The OTC bearing splitter model 1124 has a minimum spread of 1/2 inch and a maximum spread of 5 3/4 inches. It features a 5/8\"-18 tapped hole thread size. This splitter is used for separating bearings from shafts without damaging components, and its spread range accommodates various bearing sizes.

What drive sizes are available for OTC lock nut sockets?

OTC lock nut sockets are available in drive sizes including 1/2 inch, 3/4 inch, and 1 inch. For example, the OTC Locknut Socket (MPN 1939) has a 3/4-inch drive and a 5 1/4-inch socket size, while the OTC Drive Socket Set (MPN 4542) uses a 1/2-inch drive. Socket sizes range from 2 1/4 inches to 5 1/4 inches in SAE and metric configurations.

Are OTC pullers compatible with other brands' equipment?

OTC pullers are designed to be compatible with OTC puller systems, such as the OTC 927 puller. For example, the OTC Leg model 1101 is specifically compatible with the 927 puller and has an overall length of 15 3/4 inches. While OTC products are engineered to work within their own system, they may be used with other brands' components if dimensions and thread sizes match, but compatibility should be verified against specifications.