Item # SPA-330 (SS) X, SPA Series , Standard Wire Rope Clevis Pins on Strainsert Co.


	STRAINSERT…. FOR SUPERIOR INTERNALLY GAGED FORCE TRANSDUCERS Phone: 610-825-3310 Email: info@strainsert.com

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	Item # SPA-330 (SS) X SPA Series , Standard Wire Rope Clevis Pins

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Order Number	Description	Supplier
SPA-330 (SS) X	SPA Series , Standard Wire Rope Clevis Pins	Strainsert Co.

Features · Dimensional Drawing · Specifications · Performance Specs · Electrical Specifications · General Information

Features

Features of Strainsert Load Sensing Clevis Pins

Easy Installation: By replacing pins in Crosby (or Equivalent) wire rope socket, with minimum machining alterations (2-tapped holes), and hardware (2-bolts, keeper plate).

Precise Cable Load Sensing: Complete bridge circuit bonded and sealed inside small hole along longitudinal axis of Pin, calibrated in the direction of the applied load.

Rugged: Self protecting nature of strain gage installation sealed in small hole, and has proven to be immune to harsh environment.

Accuracy: Strainsert Load Sensing Clevis Pins have combined error due to repeatability and non-linearity less than 1% of rated load typically.

Typical Load Sensing Applications

End of Whip Line Winch

Clam Shell

Boom Pendant Cable Support

Crane Hoist Cables

Mooring Lines

Bridge Support Cables

Dead End of Winch Pulley System
…and any application where load indication on a wire rope clevis is required.

Custom Pin design performance and specification may vary with design requirements.

Note: All Load Pins can be fit with a permanently attached cable

Model SPA-100 (SS)X shown

Dimensional Drawing

Dimensional Drawing

SPA Series , Standard Wire Rope Clevis Pins

larger image

Specifications

Wire Rope Diameter		3.00–3.13 Inch

Load Capacity		330000 lb

A - Width of Center Loading Section		4-3/16 in

B - Width of Clevis Support Section		2-27/32 in

C - Length of Pin Reduced Section, Instrumented Zone		1-3/16 in

Dp - Nominal Pin Diameter		5.250 in

E - Active Length of Pin		12-1/4 in

F - Clevis Pin Head Length		2.25 in

G - Extension of Pin for Keeper Plate Installation		1-1/2 in

H - Width of Keeper Plate Slot		25/32 in

J - Depth of Keeper Plate Slot		1 in

L - Overall Length of Pin		16 in

U - Nominal Spacer Thickness		1/4 in

Weight		95.0 lb

Safety Factor		4.0

Keeper Plates		SPA-330-112-1-A

Connector Type		Axial Connector

Performance Specs

Overload without Zero Shift

150%

Overload without Failure

300% (Minimum)

Bridge

Full bridge 350 Ohm (Nominal)

Excitation

12 V AC (Maximum)
12 V DC (Maximum)

Output Signal¹

2-mv/V (Nominal)

Non-Repeatability

±0.15% FS (Nominal)

Non-Linearity

±0.50% FS (Nominal)

Hysteresis

±0.50% FS (Nominal)

Service Temp Range

to 150 °F

Temp Effects (on Zero)

0.005% FS / °F (Nominal)

Temp Effects (on Output)

0.008% load / °F (Nominal)

Zero Balance

±2% FS (Nominal)

Material

Stainless Steel 17-4, H-1025 (Standard)

Electrical Connection

6-Pin receptacle or built-in cable

Calibration

CAL5-LO

¹ Exact output provided with calibration data. In place calibration check is recommended. (Standardized outputs are optional)

Electrical Specifications

Receptacle		PTIH-10-6P

Mating Plug		PT06A-10-6S (SR)

Function		Pin

(+) Excitation		A

(-) Excitation		D

(+) Signal		B

(-) Signal		C

Cable		#20(26x34) AWG., rubber insulation, shielded, rubber jacket, 4-Conductor (Standard Cable)

Function		Wire Code

(+) Excitation		Red

(-) Excitation		Black

(+) Signal		Green

(-) Signal		White

General Information

The Load Sensing Clevis Pin or Bolt is another unique strain gage transducer developed by Strainsert (U.S. PatentNo. 3,695,096). It utilizes the internal strain gage process perfected by Strainsert over the last 40 years and used sosuccessfully in Strainsert Bolts, and Flat Load Cells®. The Force Sensing Clevis Pin offers precision force measurementby simply replacing existing shear pins, clevis bolts, shear axles, etc. and many other types of pinned joints.

The internally gaged clevis pin is typically a double-shear arrangement with two shear planes (please see More Images Box - "Clevis Pin with Two Shear Planes"), however, cantilever load pins with a single shear plane are also available.

Typically, force P is applied at the center of the pin and the pin is supported at each end (P/2) by the Clevis.The strain gages are sealed inside small axial holes and are positioned at two locations at the Clevis to Clevis Eyeinterfaces. In order to sense only those strains which are induced by the shear forces at these two sections, thegages are positioned and oriented with great precision, at a neutral plane relative to one specific direction of pinforce. The four strain gages (two at each location) are electrically connected to form a full bridge, the signal fromeach gage being additive so that the bridge output is proportional to the sum of the forces transmitted by the shearplanes of the pin. The circuit typically includes temperature compensation, signal trim (optional) and balanceresistors terminating in a suitable connector socket or integral cable, and potted with a sealing compound insidethe gage hole for enhanced environmental protection.

If the force F is applied to the pin at other than the specified direction, the theoretical bridge output will be due tothe component of the force along the sensitive direction, i.e. F cos X (please see More Images Box - "Force F Direction"). Therefore, typical pins incorporatean anti-rotation device for proper alignment .

MORE IMAGES


	· Clevis Pin with Two Shear Planes

	· Force F Direction

DOWNLOADS


		Clevis Pin Installation (PDF, 479KB)

		Strainsert Force Calibration Service (PDF, 407KB)

Renewal Parts


	Standard Cable

	PT1H-10-6P Transducer Receptacles
More available...

Accessories


	SPA-330-112-1-A Keeper Plate

Contact Strainsert
For information on load pins, force sensing bolts, load cells, tension links, signal conditioners or our high quality custom products, Contact Us for further assistance.

Item # SPA-330 (SS) X SPA Series , Standard Wire Rope Clevis Pins

Dimensional Drawing

Wire Rope Diameter

Load Capacity

A - Width of Center Loading Section

B - Width of Clevis Support Section

C - Length of Pin Reduced Section, Instrumented Zone

Dp - Nominal Pin Diameter

E - Active Length of Pin

F - Clevis Pin Head Length

G - Extension of Pin for Keeper Plate Installation

H - Width of Keeper Plate Slot

J - Depth of Keeper Plate Slot

L - Overall Length of Pin

U - Nominal Spacer Thickness

Weight

Safety Factor

Keeper Plates

Connector Type

Overload without Zero Shift

Overload without Failure

Bridge

Excitation

Output Signal1

Non-Repeatability

Non-Linearity

Hysteresis

Service Temp Range

Temp Effects (on Zero)

Temp Effects (on Output)

Zero Balance

Material

Electrical Connection

Calibration

Receptacle

Mating Plug

Function

(+) Excitation

(-) Excitation

(+) Signal

(-) Signal

Cable