POWER TAKE-OFF SHAFT FOR FORD 1000 RPM 81827171

1000 rpm PTO Shaft for Ford Tractors

PTO shaft part no. 81827171 is designed for Ford tractors equipped with an independent 2-speed PTO (540/1000 rpm). This version features a 1:1 3/8" output with 21 splines. It is suitable for applications where the implement operates at 1000 rpm, provided the tractor has the same PTO configuration.

The role of this shaft in the PTO drive

A power take-off shaft transmits motion from the tractor to the implement attached via the rear PTO outlet. In this specific case, the part is designed for use at 1,000 rpm on an independent two-speed PTO. This type of setup is found on tractors used to power various agricultural implements depending on the speed required by the implement.

The good condition of this shaft is critical to the mechanical connection between the tractor’s transmission and the equipment’s drive shaft. When replacing it, the goal is therefore to find the exact right output, with the correct operating speed and the correct number of splines.

Useful characteristics for identifying this part number

This part number can be identified by three simple checks:

• rotational speed: 1,000 rpm
• output: 1: 1 3/8"
• profile: 21 splines

It is also comparable to part numbers 81819775, 81827171, C7NNB728E, and D2NNB728B. These numbers are useful for verifying the equivalence of the assembled part, without confusing this version with another PDF output or with a shaft designed for a different speed.

Documented Ford Applications

This shaft is documented for several Ford tractors in the 00 and 000 series, as well as for certain specific applications such as the 5190, 5550, 6550, and 7550. Depending on the model, compatibility applies to tractors equipped with an independent 2-speed PTO, and certain versions are specified as of 6/73.

The detailed list of applications should be cross-referenced with the tractor’s actual configuration, as the model number alone is not always sufficient to distinguish a 540 rpm version from a non-convertible 540/1000 rpm version.

Checks to Perform Before Replacing the Shaft

Before ordering, inspect the removed part and your tractor’s configuration:

• presence of an independent 540/1000 rpm PTO
• use of the 1000 rpm setting
• 1 3/8" output
• 21 splines on the shaft
• compatibility with one of the listed reference numbers

If your tractor is one of the Ford models listed with date or version restrictions, please take this into account before replacing the part. Cross-referencing the part number, the number of splines, and the exact type of PTO will help ensure you select the correct part.

Dimensions and Technical Specifications

• 1
• 1 3/8"

Compatibility by Make and Series

Ford · Tractor

• 5000
• 5600
• 5700
• 6600
• 6,700
• 7,000
• 7,600
• 7700

Ford · 00 Series

• 5100 (6/73 → Independent 2-speed PDF)
• 5200 (6/73 → 2-speed independent PTO)
• 5600
• 5700
• 6600
• 6700
• 7100 (6/73 → Independent 2-speed PTO)
• 7600
• 7700

Ford · 000 Series

• 5000 (6/73 → 2-speed independent PTO)
• 7000 (6/73 → 2-speed independent PTO)

Ford · Skidded Series

• 5190 (6/73 → 2-speed independent PTO)
• 5550 (6/73 → 2-speed independent PTO)
• 6550
• 7550

FAQ — Frequently Asked Questions

What is this 1000 rpm PTO shaft?

It refers to the PTO output shaft used when the tractor is operating at 1000 rpm. For this part number, the identification includes an independent 2-speed 540/1000 PTO, a 1 3/8" output shaft, and 21 splines; compare it to the part already installed.

Can this part be installed on a Ford 5100 or 7100?

Yes, the source lists it for the Ford 5100 and 7100 models with a 2-speed independent PTO, provided they were manufactured on or after June 1973. Before replacement, you must therefore confirm this configuration on the tractor and verify the 1000 rpm output.

How can you tell this shaft apart from a 540 rpm version?

The distinction is primarily based on intended use and output specifications. This part is designed for the 1,000 rpm setting and can be identified by a 1 3/8" output shaft with 21 splines. You must also verify that your tractor is equipped with a non-convertible, independent 540/1000 PTO.

What part numbers can be used for comparison to identify the part?

Useful comparison part numbers are 81827171, 81819775, C7NNB728E, and D2NNB728B. These help match this PTO shaft version to the removed part, in addition to checking the splines, the 1,000 rpm speed, and the PTO type.

Original replacement part numbers and brand names are provided solely for comparison purposes. This does not imply that these are original parts.