Your cart is empty

Drawbar Force Gage CAT/BT - Spindle Clamp Force Tester

Starting at:

  • Part #:  K7300-
  • Stock:  YES - Can Ship Immediately

Our Clamp Right Drawbar Gage Kits provide an easy, accurate, and economical method of checking the drawbar force of a spindle for your machine. Spindles require maintenance and checking the drawbar frequently which takes less then a minute. This can increase tool life as well as save huge costs including a new spindle, downtime, or paid service. A spindle clamp force gage is also commonly known as a spindle drawbar dynamometer. Our Clamp right gage kits are furnished in a metal tool box and include the gage head, a spindle adapter, and an internal screw coupling that accepts the pull studs. Collect pull studs from each of your machines and store them in the clamprite case for easy access. The clamprite universal gage head adapts to every size and type of spindle, including CAT, BT, ISO, and others. Select your kit by spindle type and maximum pressure. Order additional adapters below if you already have a Clamprite drawbar kit.

Digital dynamometers cost three times as much and are more delicate and prone to problems when they are dropped or used during machine repair. Our units are mostly solid steel except for the gauge itself.

Why is a Drawbar Dynamometer a must have tool for every machine shop?

  • Cost of new spindle $10,000-25,000 average cost- common cause for throwing tools or tool walking in spindle taper
  • Cost of having a service technician come in to determine why the accuracy of your machine isn't any good
  • Cost of out-of-tolerance scrap parts
  • Shipping bad parts to your customer (Priceless!)
  • Excessive tool and insert consumption- loss of tooling rigidity
  • Possible injury of employee if/when tool is thrown
  • Scheduled downtime instead of Emergency service
  • Most service companies may not have this tool in their van when they come, which means they are looking for other problems. This check takes less than 1 minute to perform if you have the right tool for the job.
  • Ever wonder why you can't run some jobs on certain machines? It could be the drawbar force is low.
Spindle Drawbar Force Gage Kit
(complete kit including gage head and metal toolbox)
Gauge maximum Price Our Part#
BT 30 3,000 Lb. $819.00 K7300-1
BT 40 3,000 Lb. $829.00 K7300-2
CAT 40 3,000 Lb. $829.00 K7300-3
BT 40 5,000 Lb. $829.00 K7300-4
CAT 40 5,000 Lb. $829.00 K7300-5
CAT 45 5,000 Lb. $985.00 K7300-24
BT 45 5,000 Lb. $985.00 K7300-25
BT 50 5,000 Lb. $849.00 K7300-6
CAT 50 5,000 Lb. $849.00 K7300-7
CAT 50 & BT50 5,000 Lb. $1140.00 K7300-26
BT 40 & 50 5,000 Lb. $989.00 K7300-8
CAT 40 & 50 5,000 Lb.  $989.00 K7300-9
CAT 40 & BT40 5,000 Lb. $989.00 K7300-12
BT40 & BT50 5,000 Lb. $989.00 K7300-13
BT 50 Taper (High Pressure) 10,000 Lb. $885.00 K7300-10
CAT 50 Taper (High Pressure) 10,000 Lb. $885.00 K7300-11
ISO 30 Clamp Force Gauges 1,500 Lb. $940.00 K7300-32
ISO 40 Clamp Force Gauges 3,000 Lb. $1060.00 K7300-33
ISO 50 Clamp Force Gauges 5,000 Lb. $1085.00 K7300-34











Spindle gage adapters only Price Our Part#
BT 30 Spindle Adapter $155.00 K7300-15
BT 35 Spindle Adapter $158.00 K7300-21
BT 40 Spindle Adapter $173.00 K7300-16
CAT 40 Spindle Adapter $173.00 K7300-17
BT 45 Spindle Adapter $198.00 K7300-22
CAT45 Spindle Adapter $198.00 K7300-23
BT 50 Spindle Adapter  $198.00 K7300-18
CAT 50 Spindle Adapter  $198.00 K7300-19
ISO 30 adapter & coupling $160.00 K7300-27
ISO 40 adapter (metric stud) $90.00 K7300-20
ISO 50 adapter & coupling $100.00 K7300-28
Coupler converts CAT50 to BT50 $170.00 K7300-29



Pull Stud Thread size
CAT40 - 5/8" -11
CAT50 - 1" -8
BT30   - M12 x 1.75
BT40   - M16 X 2.0
BT50   - M24 X 3.0

Pressure gauge size when ordering: Most machine tools fall within the 3,000 to 5,000 lb range. It is rare that you would need a 10,000 lb. unit. A 5000 lb. gauge head is usually sufficient for most shops. If you do not have any 50taper machines we recommend the 3,000 lb. unit. If the gage head is to be used for a wide variety of 30,40,50 taper spindles then we recommend the 5000psi drawbar force gage.

Optional- ISO adapter This is typically sold to Europe, Asia, and the surrounding countries. This adapter provides METRIC threads for the retention knob to screw into instead of standard inch threads. ISO 30 adapter needs both taper and coupling.

CAT/BT differences - The CAT 40 is .112 longer than the BT 40, (and the BT has a metric thread) two different taper adapters would be required as well as a coupling. The CAT and BT 50 Taper adapter is identical so an extra BT coupling is only needed to change over gauge head. 

Machining with low drawbar force is like machining with a loose cutter!

Spindle Clamp - Drawbar force gauge dynamometer / dynomometer gage, Spindle Tool Clamp Force Tester Gage.

Select a complete gauge kit below which includes toolbox, gauge head and adapters. If you would like a different combination of adapters select them additionally below. Only select a gauge head if you need a replacement one.

Must select from options below before adding to cart:

Drawbar Gage Set

Additional Adapters

Gage Head

Add to Cart:

  • Part #:  K7300-
  • Stock:  YES - Can Ship Immediately