Verti-Drain 7521

The Verti-Drain 75 Series incorporates all the innovative technology of the second generation Verti-Drain line. This makes it the first choice for anyone looking for a full 16 inch deep penetration and high productivity up to 49,800 square feet per hour. Available with a 3-speed gearbox that will match up to any tractor.

This unit is widely used by contractors and golf clubs on all areas, including greens, where 1/2 inch tines can be fitted at 2 1/2 inch centers.

Download Verti-Drain 7521 Brochure
Download Verti-Drain 7521 Manuals

FeatureBenefit
Heavy Weight
Deeper penetration
Slip Clutch Prevents damage to machine and tractor
16" (400 mm) Penetration Relief of compaction at depths no other machine can reach, removing any hard pan at depths up to 16” (400 mm)
Versatile Applications Football, soccer and baseball fields, golf and race courses
ModelVerti-Drain 7521
Working width 84” (2.10 m)
Working depth Up to 16” (400 mm)
Tractor Speed @500 Rev’s at PTO
Spacing 2.5” (65 mm)
Spacing 5” (130 mm)
Spacing 7.5” (195 mm)

Up to 0.45 mph (0.70 kph)
Up to 0.90 mph (1.40 kph)
Up to 1.35 mph (2.10 kph)
Maximum PTO speedUp to 500 rpm
Weight 3,025 lbs (1,375 kg)
Hole Spacing Side-to-Side
5” (129 mm) with 1” (24 mm) holes
2.5” (65 mm) with 0.5” (12 mm) holes
Hole spacing in driving direction 2” – 7.5” (50 mm – 195 mm)
Recommended Tractor Size
7521: 55 hp, with minimum lift capacity of 3,600 lbs (1,650 kg)
7521H: 45 hp
Maximum Capacity
Spacing 2.5” (65 mm)
Spacing 5” (130 mm)
Spacing 7.5” (195 mm)
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Up to 16,523 sq. ft./h (1,536 sq. m./h)
Up to 33,047 sq. ft./h (3,071 sq. m./h)
Up to 49,570 sq. ft./h (4,607 sq. m./h)
Shipping Dimensions
91” x 40” x 60” (2.3 m x 1.0 m x 1.5 m)
Maximum Tine Size
Solid 1” x 16” (24 mm x 400 mm)
Hollow 1.25” x 12” (32 mm x 300 mm)
Slip Clutch Setting PTO Maximum 7,080 lb-in (800 Nm)
Three Point Linkage 3-point CAT 2
Transmission Oil Life time grease EP 00
Lubrication Grease EP 2
Standard Items
– Set solid tines to 0.75” x 12” (18 mm x 300 mm) with adapters
– Front and rear roller
– 3-shuttle gearbox
– PTO shaft

Tine Selections

The 7521 has 8 tine heads, each with four 12mm & two 24mm tine mounts, max. depth 16″

Part # Description Depth Total ID OD Wall Core Mount Qty.
SOLID TINES
311.112.2001/2 x 8 #8 10 na 12mm na na 12mm 32
311.118.2003/4 8 8 10 na 18mm na na 18mm 16B
9990019 1/2 x 14 14 15-1/2 na 12mm na na 12mm 32
2381837 1/2 x 10 # 10 12-1/2 na 12mm na na 12mm 32
2381841 3/4 x 10 10 12-3/4 na 18mm nana 18mm 16B
2381838 1/2 x 12 12 14 na 12mm na na 12mm 32
2382638 3/4 x 12 # 12 14 na 18mm na na 18mm 16B
2382639 3/4 x 16 16 18 na 18mm na na 18mm16B
2382640 1 x 16 16 18 na 24mm nana 24mm 16
311.112.150 1/2 x 6 6 8 na 12mm na na 12mm 32
311.108.150 5/16 x 66 8 na 8mm na na 8mm 32M/64*
311.105.125 3/16 x 5 5 5-3/4 na 5mm na na 5mm 32N
9990056 5/16 x 7 7 9 na 8mm na na 8mm 32M/64*
9990059 5/16 x 10 10 11-1/2 na 8mm na na 8mm 32M/64*
CORING TINES
311.210.080 3/8 x 3-1/4 3-1/4 4-1/4 5/1 3/8 .045 1/4 8mm 32M/64*
311.210.1273/8 x 5 5 6 5/16 3/8 .047 1/4 8mm 32M/64*
9990022 5/8 x 7 7 8 1/2 5/8 .062 3/8 12mm 32
9990023 3/4 x 10 10 11-3/4 9/16 3/4 .094 7/1618mm 16B
9990024 1 x 10 10 11-3/4 9/16 3/4 .094 7/16 18mm 16B
9990034 1-1/4 x 12 12 14-1/2 7/8 1-1/4 .156 3/4 24mm 16
9990040 3/4 x 10 10 11-1/2 9/16 3/4 .094 7/16 12mm 24
9990076 1 x 6 6 7 3/4 1 .125 5/8 12mm 32
999F003 13/16 x 6 6 7-3/8 9/16 13/16.105 1/2 12mm 32
999F005 5/8 x 6 6 7 1/2 5/8 .062 3/8 12mm 32
999F007 5/8 x 6 fixed shank 6 7 1/2 5/8 .062 3/8 12mm 32
ADAPTERS
314.208.043 M-8mm to 12mm na na 8mm 12mm na na na 32
314.205.043N-5mm to 12mm na na 5mm 12mm na na na 32
2451800 B-3/4 to 1 #na na 18mm 24mm na na na 16
311.812.120X-1/2 Verti-Drill na na 1/2 na nana 12mm 32
311.819.120 Y-3/4 Verti-Drill na na 3/4 na na na 18mm 16
VERTI-DRILLS
311.812.230 1/2 x 10 Drill 10 10.5 na 1/2 na na 12mm 32X
311.819.230 3/4 x 10 Drill 10 10.5 na 3/4 na na 18mm 16Y&B

Accessories

Part #DescriptionNotesQty.
9500100 Hydraulic Wheel KitConverts from 3-pt mount to trailed unit with hydraulic lift frame & tires1
9990211Pencil Tine Block Kit Holds eight 8mm shank tines per head 8
211.752.007 Turf Hold Down Kit Aligns with 12mm tineholder holes 1
211.752.006 Turf Hold Down Kit Aligns with 24mm tineholder holes 1
211.752.004 Auxiliary Spring Kit Additional external spring for added tension 8
468.102.230 Tine head reinforcing plate Hardened plate bolts to bottom of tine head for additional strength8