PTO Shafts

PTO Shafts

A Power Take-Off (PTO) shaft allows an implement to connected to a suitable power source, such as a tractor engine. The shaft is defined by its tube profile, (either lemon, star or triangular), and by its Universal Joint dimensions.

PTO Identification Guide

Identifying the PTO drive shaft correctly is critical to order the correct parts for the repair or replacement for your vintage or modern tractor with a new equivalent PTO shaft.

Using the following steps will help you to identify the type or series of shaft you have.

1. Identify the UJ type and size by measuring:

• A, The cup size = AØ
• B, The overall length = A (with bearing caps on)

2. Identify the profile type and size of the tube:

• A, Lemon
• B, Star
• C, Triangle
• For sizing measure H/W/T

3. PTO Length

If a new complete PTO shaft is required measure the distance from centre to centre of the UJ’s when the shaft is closed

Tube Dimensions

German Series

Tube Type		Type	H(mm)	W(mm)	T(mm)
OOa		Standard	31	23.5	4
Oa		Standard	39	30	2.8
OV		Standard	40	34.5	4
1		Standard	48	41	3
OVGA		Rilsan Coated	40	35	4.2
1G		Rilsan Coated	48	41	2.7
1b		Standard	49	39.5	4.5
2a		Standard	57.5	48	4
1bGA		Rilsan Coated	49	39.5	4.8
2aG		Rilsan Coated	57.5	48	3.6
S4		Standard	51	37
S4GA		Rilsan Coated	51.5	37
S5		Standard	61	47	4.5
S5GA		Rilsan Coated	61	47	4
S6		Standard	71.5	57.5	5

Italian Series

Tube Type		Type	H(mm)	T(mm)
12502		Standard	26.5	3.5
12503		Standard	32.5	2.6
12504		Standard	29	4
24504		Rilsan Coated	29.5	4.2
12505		Standard	36	3.4
12518		Rilsan Coated	36	3.2
12607		Standard	36	4.5
24510		Rilsan Coated	36.5	4.2
12508		Standard	43.5	3
12516		Rilsan Coated	43.5	3.2
12509		Standard	45	4
24516		Rilsan Coated	45	4.1
12510		Standard	51.6	3
12511		Standard	45	5.5
24518		Rilsan Coated	45	5.6
12512		Standard	54	4
12517		Rilsan Coated	54	4.3
12513		Standard	54	5
24569		Rilsan Coated	54	4.7
24574		Rilsan Coated	54	5.2
12522		Standard	63	4
12521		Rilsan Coated	63	3.9

PTO Shaft Product Guide

To help you to find your complete PTO shaft quickly we have created a PTO product guide. Below we demonstrate this quick and easy process to selecting and buying your new PTO shaft.

Step 1 – Select PTO Shaft Type

The first step in identifying a suitable replacement PTO assembly or component parts is to determine the “Series” (and “Type” where applicable) of the PTO shaft. The most common styles of PTO shafts are often referred to as “German” or “Italian” style. You can identify the series/type of a PTO shaft by looking at the Shaft Profile of the inner and outer tubes and cross reference that with the dimensions of the universal joint (measurements AØ and A) used.

Step 2 – Select Tractor End Attachment

A list of different attachment types are displayed for selection, (our wizard automatically filters out any attachments that are not suitable for your power take-off shaft type as specified in step 1.)

Step 3 – Select Implement End Attachment

Once again the wizard filters out any unsuitable shafts and only displays implement end attachments that will fit your requirements

Step 4 – Select Your Matching PTO Shaft Assemblies

The selection process is complete, a comprehensive list of power take-off shafts are listed ready for your selection