Gravity Flow Rack

High Density First In, First Out Management System

Gravity Flow Pallet Rack Systems are ideal for supplying pallet or carton loads of common SKUs in sorting and distribution operations. They also are a great option where high throughput is required or in a warehouse storage situation that calls for large volumes of each SKU.

Feeds pallets and cartons of product to processing, order picking and shipping.

Gravity flow pallet racks act like a conveyor within a rack structure. Pallets are deposited at the charge end and then flow down an incline to be picked at the opposite end. Systems can be 6 or more bays high and can run from a few to 15 positions deep. Using gravity to gently keep pallet loads staged for picking operations, flow racks are an economical first-in first-out storage rack solution.

Ridg-U-Rak conducts pallet flow tests using the client's actual pallet loads for a reliable, efficient and well-designed pallet rack solution. Our experienced engineering staff works directly with Ridg-U-Rak project managers to ensure that all specifications are met. Installation services are available and pallet rack projects are completed on time and on budget.

Columns Sizes: 3x2-4, 3x3 and 4x3-inch

Beam Sizes: 5-inch roll-formed

Standard Load: 3,000 lbs

Features & Benefits:

Multiple heavy-duty roller options
Economical roll formed columns
Deeper systems
Pallet flow audits and testing
Available entry guides
First in – first out per lane

Applications:

Distribution centers
Pick modules and staging areas
Large value per SKU
High throughput

Upright Frames

capacity charts

Frame Capacities

Vertical Beam
Spacing	UF-S31I	UF-S32I	UF-S33I	UF-R33I	UF-M33I	UF-Y33I	UF-H33I	UF-M43I	UF-H43I
36"	Static Load Capacities for component items are no longer published.
42"
48"
54"
60"
72"
84"
96"
108"

* Due to the system-based design approach of the current RMI Specification, the use of static load capacities are no longer appropriate. Load ratings can only be provided though a system analysis which accounts for configuration of the system, static loading, seismic parameters, stability requirements and the interaction characteristics of the various system components.

If your system was provided to you by Ridg-U-Rak, please contact your regional sales manager for the appropriate capacity rating. If you purchased a Ridg-U-Rak system from a source other than Ridg-U-Rak, it is recommended that you work with an experienced rack design engineer to obtain the appropriate capacity rating.

Frame Capacities

Vertical Beam
Spacing
36"	Static Load Capacities for component items are no longer published.
42"
48"
54"
60"
72"
84"
96"
108"

* Due to the system-based design approach of the current RMI Specification, the use of static load capacities are no longer appropriate. Load ratings can only be provided though a system analysis which accounts for configuration of the system, static loading, seismic parameters, stability requirements and the interaction characteristics of the various system components.

If your system was provided to you by Ridg-U-Rak, please contact your regional sales manager for the appropriate capacity rating. If you purchased a Ridg-U-Rak system from a source other than Ridg-U-Rak, it is recommended that you work with an experienced rack design engineer to obtain the appropriate capacity rating.

Frame capacity chart - Slotted Connection

Vertical Beam Spacing	SSF-335
36"	Static Load Capacities for component items are no longer published.
48"
60"
72"
84"
96"
108"

Frame capacity chart - Bolted Connection

Vertical Beam Spacing	SBF-335	SBF-341	SBF-445
36"	Static Load Capacities for component items are no longer published.
48"
60"
72"
84"
96"
108"

* Due to the system-based design approach of the current RMI Specification, the use of static load capacities are no longer appropriate. Load ratings can only be provided though a system analysis which accounts for configuration of the system, static loading, seismic parameters, stability requirements and the interaction characteristics of the various system components.

If your system was provided to you by Ridg-U-Rak, please contact your regional sales manager for the appropriate capacity rating. If you purchased a Ridg-U-Rak system from a source other than Ridg-U-Rak, it is recommended that you work with an experienced rack design engineer to obtain the appropriate capacity rating.

Horizontal Beams

capacity charts

Beam Capacities

Beam Profile	Beam Lengths
Beam Profile	48"	60"	72"	84"	92"	96"	102"	108"	120"	144"	156"
250 S	5,700	4,530	3,130	2,300	1,910	1,750	1,550	1,380	1,120	770	660
300 S	7,500	5,980	4,820	3,530	2,940	2,690	2,380	2,120	1,720	1,190	1,010
355 S	9,760	7,770	6,460	5,330	4,440	4,070	3,600	3,210	2,590	1,790	1,520
410 L	10,810	8,620	7,150	6,110	5,570	5,200	4,600	4,100	3,310	2,290	1,940
410 S	12,000	9,780	8,120	6,930	6,320	5,830	5,160	4,600	3,710	2,570	2,180
465 S	12,000	11,970	9,940	8,490	7,740	7,410	6,960	6,320	5,110	3,530	3,000
500 S	12,000	12,000	11,170	9,540	8,700	8,330	7,830	7,380	6,140	4,250	3,610
550 S	18,000	18,000	18,000	11,150	10,160	9,720	9,140	8,620	7,740	5,420	4,610
600 S	18,000	18,000	18,000	12,850	11,710	11,210	10,540	9,940	8,920	6,790	5,770
650 S	18,000	18,000	18,000	14,660	13,360	12,790	12,020	11,340	10,180	8,360	7,110
650 R	18,000	18,000	18,000	18,000	15,160	14,520	13,640	12,870	11,550	9,370	7,970

• Capacities are based on uniformly distributed loads per pair of beams.
• Capacities listed are for non-seismic conditions. For seismic conditions consult with Ridg-U-Rak sales or engineering.

Beam Capacities

Beam Profile	Beam Lengths
Beam Profile	48"	60"	72"	84"	92"	96"	102"	108"	120"	144"	156"
250 S	5,700	4,530	3,130	2,300	1,910	1,750	1,550	1,380	1,120	770	660
300 S	7,500	5,980	4,820	3,530	2,940	2,690	2,380	2,120	1,720	1,190	1,010
355 S	9,760*	7,770	6,460	5,330	4,440	4,070	3,600	3,210	2,590	1,790	1,520
410 L	10,810*	8,620	7,150	6,110	5,570	5,200	4,600	4,100	3,310	2,290	1,940
410 S	12,270*	9,780*	8,120	6,930	6,320	5,830	5,160	4,600	3,710	2,570	2,180
465 S	15,020*	11,970*	9,940*	8,490	7,740	7,410	6,960	6,320	5,110	3,530	3,000
500 S	16,890*	13,460*	11,170*	9,540*	8,700	8,330	7,830	7,380	6,140	4,250	3,610
550 S	19,720*	15,710*	13,050*	11,150*	10,160*	9,720*	9,140*	8,620	7,740	5,420	4,610
600 S	22,500*	18,120*	15,050*	12,850*	11,710*	11,210*	10,540*	9,940*	8,920	6,790	5,770
650 S	22,500*	20,670*	17,160*	14,660*	13,360*	12,790*	12,020*	11,340*	10,180*	8,360	7,110
650 R	22,500*	22,500*	19,480*	16,640*	15,160*	14,520*	13,640*	12,870*	11,550*	9,370*	7,970

• Capacities marked with * indicate that the column connection capacity may be limited based on the hook option and/or frame model (see table below).
• Capacities listed are for non-seismic conditions. For seismic conditions consult with Ridg-U-Rak sales or engineering.
• Capacities are based on uniformly distributed loads per pair of beams.
• Capacities listed are for a 2-pallet wide condition.
• All beams over 114" in length should utilize at least one flanged, tek-screwed or lock-in cross bar located at mid length.

Beam Capacities - Slotted Connection

Beam Length
	Un-braced Cap/pr	Braced Cap/pr	Un-braced Cap/pr	Braced Cap/pr	Un-braced Cap/pr	Braced Cap/pr	Un-braced Cap/pr	Braced Cap/pr	Un-braced Cap/pr	Braced Cap/pr
48"	10,880	11,160	12,290	12,290	18,510	18,910
54"	9,350	9,920	10,640	10,930	15,860	16,810
72"	6,280	7,210	7,330	7,930	10,550	12,610	18,810
84"	4,970	5,300	5,830	5,830	8,060	10,810	14,840	18,960
92"	4,140	4,420	4,860	4,860	6,650	9,870	12,330	17,310
96"	3,800	4,060	4,460	4,460	6,080	9,320	11,280	16,590
102"	3,360	3,600	3,950	3,950	5,350	8,260	9,940	15,620	14,130
108"	2,990	3,210	3,530	3,530	4,750	7,370	8,830	14,750	12,520
120"	2,420	2,600	2,860	2,860	3,820	5,970	7,100	12,880	10,030
132"	2,000	2,150	2,360	2,360	3,140	4,930	5,840	10,640	8,220	17,640
144"	1,670	1,810	1,990	1,990	2,630	4,150	4,880	8,940	6,870	15,640
156"	1,430	1,540	1,690	1,690	2,230	3,530	4,150	7,620	5,820	13,330
180"	1,070	1,160	1,270	1,270	1,670	2,660	3,100	5,730	4,340	10,010

Note: Beams must be secured by beam locks against accidental upward forces. All capacities are per pair of beams based on uniformly distributed loads. Capacities are based on current RMI specifications.

Beam Capacities - Bolted Connection

Beam Length
	Un-braced Cap/pr	Braced Cap/pr	Un-braced Cap/pr	Braced Cap/pr	Un-braced Cap/pr	Braced Cap/pr	Un-braced Cap/pr	Braced Cap/pr	Un-braced Cap/pr	Braced Cap/pr
48"	10,880	11,160	12,290	12,290	18,510	18,910
54"	9,350	9,920	10,640	10,930	15,860	16,810
72"	6,280	7,210	7,330	7,930	10,550	12,610	18,810
84"	4,970	5,300	5,830	5,830	8,060	10,810	14,840	18,960
92"	4,140	4,420	4,860	4,860	6,650	9,870	12,330	17,310
96"	3,800	4,060	4,460	4,460	6,080	9,320	11,280	16,590
102"	3,360	3,600	3,950	3,950	5,350	8,260	9,940	15,620	14,130
108"	2,990	3,210	3,530	3,530	4,750	7,370	8,830	14,750	12,520
120"	2,420	2,600	2,860	2,860	3,820	5,970	7,100	12,880	10,030
132"	2,000	2,150	2,360	2,360	3,140	4,930	5,840	10,640	8,220	17,640
144"	1,670	1,810	1,990	1,990	2,630	4,150	4,880	8,940	6,870	15,640
156"	1,430	1,540	1,690	1,690	2,230	3,530	4,150	7,620	5,820	13,330
180"	1,070	1,160	1,270	1,270	1,670	2,660	3,100	5,730	4,340	10,010

Note: All capacities are per pair of beams based on uniformly distributed loads. Capacities are based on current RMI specifications.

Options (Frame & Beam)

Must be specified at the time of manufacturing

Accessories

Flow System - Virtual Showroom

Gravity Flow are high density "First In, First Out" rack systems. Rollers and brakes are commonly used to feed pallets down an incline to a staging or picking operation. Systems are multiple levels high, and multiple positions deep. Flow rack systems provide an effective storage option for applications involving a low number of SKUs and high inventory turns, and are useful when storing time sensitive products.