Crosby Catalog - Crosby Swivel Hoist Ring - Warnings and Application Instructions

Crosby Swivel Hoist Ring

WARNING AND APPLICATION INSTRUCTIONS

HR-125
(Red Washer)

HR-125 M
(Silver Washer)

Hoist Ring Application Assembly Safety

Use swivel hoist ring only with a ferrous metal (steel, iron) or soft metal (i.e., aluminum) loads (work piece). Do not leave threaded end of hoist ring in aluminum loads for long time periods due to corrosion.
After determining the loads on each hoist ring, select the proper size hoist ring using the Working Load Limit ratings in Table 1 for UNC threads and Table 2 for Metric threads.
Drill and tap the work piece to the correct size to a minimum depth of one-half the threaded shank diameter plus the threaded shank length. See rated load limit and bolt torque requirements imprinted on top of the swivel trunnion. (See Table 1 and/or Table 2)
Install hoist ring to recommended torque with a torque wrench making sure the bushing flange meets the load (work piece) surface.
Never use spacers between bushing flange and mounting surface.
Always select proper load rated lifting device for use with Swivel Hoist Ring.
Attach lifting device ensuring free fit to hoist ring bail (lifting ring). (Fig. 1)
Apply partial load and check proper rotation and alignment. There should be no interference between load (work piece) and hoist ring bail. (Fig. 2)
Special Note: When a Hoist Ring is installed with a retention nut, the nut must have full thread engagement and must meet one of the following standards to develop the Working Load Limit (WLL).

ASTM A-563 (A) Grade D Hex Thick
(B) Grade DH Standard Hex
SAE Grade 8 - Standard Hex

Figure 1

WRONG

Figure 2

WRONG

WARNING

Loads may slip or fall if proper eye bolt assembly and lifting procedures are not used.
A falling load can seriously injury or kill.
Read and understand and follow instructions, diagrams and chart information before using swivel hoist ring assembly.

Hoist Ring Inspection / Maintenance

Always inspect hoist ring before use.
Regularly inspect hoist ring parts. (Fig. 3)
Never use hoist ring that shows signs of corrosion, wear or damage.
Never use hoist ring if bail is bent or elongated.
Always be sure threads on shank and receiving holes are clean, not damaged, and fit properly.
Always check with torque wrench before using an already installed hoist ring.
Always make sure there are no spacers (washers) used between bushing flange and the mounting surface. Remove any spacers (washers) and retorque before use.
Always ensure free movement of bail. The bail should pivot 180° and swivel 360°. (Fig. 4)
Always be sure total work piece surface is in contact with hoist ring bushing mating surface. Drilled and tapped hole must be 90° to load (work piece) surface.

Figure 3

Figure 4

OPERATING SAFETY

Never exceed the capacity of the swivel hoist ring, see Table 1 for UNC threads and Table 2 for Metric threads.
When using lifting slings of two or more legs, make sure the forces in the legs are calculated using the angle from the vertical to the leg and select the proper size swivel hoist ring to allow for the angular forces. (Note: Sling angles will de-rate sling members (chain, rope, or webbing) but will not de-rate swivel hoist ring capacity.)
Never exceed the capacity of the swivel hoist ring, see Table 1 for UNC threads and Table 2 for Metric threads.
When using lifting slings of two or more legs, make sure the forces in the legs are calculated using the angle from the vertical to the leg and select the proper size swivel hoist ring to allow for the angular forces. (Note: Sling angles will de-rate sling members (chain, rope, or webbing) but will not de-rate swivel hoist ring capacity.)

Table 1
HR-125 Swivel Hoist Rings
Working Load Limit * (lbs.)	Torque ** in Ft. Lbs.	Bolt Size §§ (in.)	Effective Thread Projection Length (in.)
800 §	7	5/16 - 18 x 1.50	.59
1000 §	12	3/8 - 16 x 1.50	.59
2500	28	1/2 - 13 x 2.00	.71
2500 §	28	1/2 - 13 x 2.50	1.21
4000	60	5/8 - 11 x 2.00	.71
4000 §	60	5/8 - 11 x 2.75	1.46
5000	100	3/4 - 10 x 2.25	.96
5000 §	100	3/4 - 10 x 2.75	1.46
7000	100	3/4 - 10 x 2.75	.90
7000 §	100	3/4 - 10 x 3.50	1.65
8000	160	7/8 - 9 x 2.75	.90
8000 §	160	3/4 - 9 x 3.50	1.65
10000	230	1 - 8 x 3.00	1.15
10000 §	230	1 - 8 x 4.00	2.15
15000	470	1 1/4 - 7 x 4.50	2.22
24000	800	1 1/2 - 6 x 6.50	2.98
30000	1100	2 - 4 1/2 x 6.50	2.98

* Ultimate load is 5 times the Working Load Limit. Individually proof tested to 2 1/2 times the Working Load Limit.
** The tightening torque values shown are based upon threads being clean, dry and free of lubrication.
§ Long bolts are designed to be used with soft metal (i.e., aluminum) work piece. While the long bolts may also be used with ferrous metal (i.e., steel & iron) work pieces, short bolts are designed for ferrous work pieces only.
§§ Bolt specification is a Grade 8 Alloy socket head cap screw to ASTM A-574. All threads are UNC - 3A.

Table 2
HR-125M Metric Swivel Hoist Rings *
Working Load Limit (Kg)		Torque ** in N-m	Bolt Size §§ (mm)	Effective Thread Projection Length (mm)
At a 5:1 Design Factor §	At a 4:1 Design Factor §	Torque ** in N-m	Bolt Size §§ (mm)	Effective Thread Projection Length (mm)
400	500	10	M8 x 1.25 x 40	16.9
450	550	16	M10 x 1.50 x 40	16.9
1050	1300	38	M12 x 1.75 x 50	17.2
1900	2400	81	M16 x 2.00 x 60	27.2
2150	2700	136	M20 x 2.50 x 65	31.2
3000	3750	136	M20 x 2.50 x 75	28.1
4200	5250	312	M24 x 3.00 x 80	33.1
7000	8750	637	M30 x 3.50 x 100	45.1
11000	13750	1005	M36 x 4.00 x 150	60.6
12500	15600	1005	M42 x 4.50 x 160	70.6
13500	16900	1350	M48 x 5.00 x 160	70.6

* Designed to be used with ferrous work piece only.
** The tightening torque values shown are based upon threads being clean, dry and free of lubrication.
§ Individually proof tested to 2 1/2 times the Working Load Limit based on the 4:1 design factor.
§§ Bolt specification is a Grade 12.9 Alloy socket head cap screw to DIN 912.
All threads are metric (ASME/ANSI B18.3. 1m).