LD - Loadisc™ Reaction Washer

Loadisc™ Reaction Washer Overview

The LoaDisc™ eliminates all the drawbacks of hydraulic torque and tension tools by assuring failure-free startups, hands-free safe in half the time. When a LoaDisc™ is placed under a standard nut, torque can be applied without damaging or marring adjacent nuts, flanges or the tool.

The unique configuration of the LoaDisc™ turns the standard nut into a high accuracy device by removing uncontrolled flange friction and nut side loading. The LoaDisc™ provides the operator with a completely hands free and reaction free nut tightening operation.

The Loadisc™ functions like a simple washer placed under a conventional hex nut.

Each Loadisc™ has a threaded insert pressed into the bottom of the body. The Loadisc™ is installed on a bolted application just before the hex nut. Using a special socket the Loadisc™ body is utilized as a reaction point for applying torque to the hex nut. As the stud stretches during tightening the threaded insert travels upward and creates twisting resistance on the stud threads which eliminates the need for a backup wrench.

The LoaDisc™: Fast, Safe, Simple & Accurate

LoaDisc™ installed on bolt	Standard nut on LoaDisc™	During stretching of the bolt,the thread segment of the LoaDisc™ creates a counter nut effect and prevents the bolt from turning	Finished application

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The outer socket of the Disc driver locks onto the LoaDisc™ directly… ensuring safe, hands free operation even on inverted applications!

LD Loadisc™ Features & Benefits

BENEFITS

• Reaction Point Free Torque Application
• Backup Wrench Free Torque Application
• Side Load Free Torque Application
• High Load Accuracy
• Hand Free Operation

FEATURES

• Operates with Standard Hex Nut
• Hard Finished Nut Seating Surface
• Notched Hex Corners for Inverted Operation

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LD Loadisc™ Steps for Specifying Proper Size

When ordering a LoaDisc for your application, check the following:

1. Stud thread pitch
2. Across fl ats of nut is less than that of the LoaDisc
3. Stud extension is less than the max stroke of LoaDisc, include joint closure when determining this.
4. Sufficient overhead clearance for tooling

BLANK SIZE Each LoaDisc is designed to accommodate similar sized metric and inch threads. This allows us to control the drives. SIZE CODE We stock thread pitches shown in table at left. If your application requires a pitch outside this range, contact a JETYD application engineer. HEIGHT This is the overall height of the LoaDisc. When determining clearances, take into account top nut. TRAVEL The max extension the disc will allow, if your application requires longer stud extensions, contact a JETYD applications engineer. THREADS The LoaDisc can accommodate all thread classes for standard UN (ANSI/ASME B1.1-1989 (R2001)) and Metric sizes (ISO 68 and ANSI/ASME B1.13M). For any class other than this, please contact JETYD appli-cations engineer.

BLANK	INCH BASIC SIZE	INCH THREAD PITCH	METRIC BASIC SIZE	METRIC THREAD PITCH	ACROSS FLATS PITCH	ACROSS FLATS METRIC	HEIGHT	TRAVEL
1	¾	10	20	2.5	1 ¼	32	0.720	0.473
2	7/8	9	24	3	1 7/16	37	0.795	0.544
3	1	8	27	3	1 5/8	41	0.890	0.597
4	1 1/8	8	30	3.5	1 13/16	46	0.890	0.595
5	1 ¼	8	33	3.5	2	51	0.925	0.626
6	1 3/8	8	36	4	3 3/16	81	1.005	0.586
7	1 ½	8	39	4	2 3/8	60	1.045	0.626
8	1 5/8	8	42	4.5	2 9/16	65	1.045	0.625
9	1 ¾	8	45	5	2 ¾	70	1.045	0.618
10	1 7/8	8	48	5	2 15/16	75	1.095	0.661
11	2	8	52	5	3 1/8	79	1.095	0.659
12	2 ¼	8	56	5.5	3 ½	89	1.210	0.684
13	2 ½	8	64	6	3 7/8	98	1.370	0.840
14	2 ¾	8	72	6	4 ¼	108	1.510	0.932
15	3	8	80	6	4 5/8	117	1.675	1.021
16	3 ¼	8	85	6	5	127	1.756	0.911
17	3 ½	8	90	6	5 3/8	137	1.867	1.022
18	3 ¾	8	100	6	5 ¾	146	1.978	1.133
19	4	8	-	-	6 1/8	-	2.089	1.244

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LD Loadisc™ Specifications

Click Here for Loadisc Driver Dimensions: SO-Style for Dream Makers (DM)

Click Here for Loadisc Driver Dimensions: L-Style for Disc Washers (DW)

Step 1 - Take your reaction arm off your tool.	Step 2 - Place drive into the Twin-Tension Socket, place tool on fastener and connect to LoaDisc™.

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LD Loadisc™ Applications

Common LD Washer applications include:

• Reactors
• Head Exchanger bolting
• Dollar Plate
• manway bolting
• shell bolting
• reactor bolting
• pipeline bolting

Click on an image for a larger view

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LD Loadisc™ Demonstration Video

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