Delta 4 Step Pulley Size/Speed/Cat.No. Charts

[Larry Buskirk]

I've found the information in these catalog snips very useful over the years redoing my old machines. But every time I've needed them I've had to look to find them, so I'm putting them here so I can find them easier. Hopefully you will find them useful yourself.

Around 1972 Delta changed the catalog numbers.

Instead of ordering a pulley and having to specify the bore size you ordered by a specific catalog number.

These and other 5 digit catalog numbers were then again changed around 1983.

The new numbers were 12 digit.

The below links will take you to the 5 digit to 12 digit conversion tables.

Part one.

http://www.vintagemachinery.org/pubs/detail.aspx?id=1087

 

Part two.

http://www.vintagemachinery.org/pubs/detail.aspx?id=1088

 

The 718, and 720 pullies were used on quite a few Delta machines over the years.

They are commonly found on the 4 speed scroll saws, wood/metal bandsaw, and a few others.

 

The 932 was commonly used on the Delta 9", 10", 11", and 12" wood lathes.

This is the pulley that matches the lathe headstock pulley.

 

The 985 is more commonly referred to as the DP 260 pulley.

It is the matching motor pulley used on the smaller Delta 4 speed Drill Press's. 

It is used on both the standard, and Slo-Speed Drill Press's

Edited March 12, 2020 by Larry Buskirk

[DougM]

Larry, thank you very much for this helpful post!

I am getting ready to use a very nice No. 700 and I'm confused about what pulleys to use for motor and saw.  I have seen photos of others with and without step pulleys. 

The operator manuals I've found refer to a single pulley and a step pulley, depending on which manual I read.  The manuals refer to both No. 5400 and No. 718 (on the motor?).

The saw I acquired has a No. 720 step pulley on it; I find that this was pretty common on the 24" scroll saws.

I think I can leave the #720 on the saw, but would appreciate advice on whether to put a single speed or step pulley on the motor.

Many thanks!

Doug

[Larry Buskirk]

@DougM

Only the earliest version of the 700 used single groove pullies. both would have been 4" 5400 pullies which (According to the catalogs) gave a speed of 1750 RPM, or strokes per minute. To change speeds with them required changing both pullies to be able to use the same belt.

For the later versions a 718 pulley on the motor would give you speeds of 610, 910, 1255, and 1725 RPM/SPM and allow changing speeds by simply repositioning the belt. 

 

 

[DougM]

Many thanks for the prompt response, Larry!  If my 700 happens to be an early edition, is it OK to use the step pulley set-up?  If I can put a 718 on the motor, can I put a 720 on the saw?  Looking at the chart you posted, I like that range of speeds.

 

[Larry Buskirk]

@DougM 

If your saw has the 720 pulley it more than likely came with it.

Delta changed to the step pulley set-up to make speed changes easier in 1934.

Not much else changed on these saws over their run except on the last 1937 model year when they used the lower drive components and blower assembly from the 1200 model. So, yes you can use a 718 pulley on the motor.

[DougM]

Great!  Now to find a 718!

[Goin Mobile]

While we’re talking pulleys can anyone advise the cutterhead pulley size for a 4” delta home craft joiner? I’m running a 1/2hp Westinghouse motor with a 3/4” shaft and running at 1750 rpm’s. The other thing is the cutterhead shaft measures 9/16”. 

[Grandpadave52]

21 hours ago, Goin Mobile said:

While we’re talking pulleys can anyone advise the cutterhead pulley size for a 4” delta home craft joiner? I’m running a 1/2hp Westinghouse motor with a 3/4” shaft and running at 1750 rpm’s. The other thing is the cutterhead shaft measures 9/16”. 

Welcome Tim to The Patriot Woodworker. Great to have you here.

Hopefully @Larry Buskirkwill be along soon to offer up recommendations. He's our resident Delta guru.

[Larry Buskirk]

On 2/5/2024 at 3:01 PM, Goin Mobile said:

While we’re talking pulleys can anyone advise the cutterhead pulley size for a 4” delta home craft joiner? I’m running a 1/2hp Westinghouse motor with a 3/4” shaft and running at 1750 rpm’s. The other thing is the cutterhead shaft measures 9/16”. 

That would require a 2 3/4" diameter by 9/16' bore Delta J17 pulley.

I sent you a Personal Message.

[Ross100]

@Larry Buskirk - this is a really great post, and lead me to registering on this great forum! Thank you for sharing this information! I'm looking at a 1940's 880 with modified pulleys/motors. I posted up some questions here, if you happen to know about that model and vintage and care to weigh in.