Case IH SB521 Small Square Baler

SB521 Small Square Baler for sale at Miller Sellner, MN. Serving your new and used equipment needs from Sleepy Eye, Bingham Lake, Slayton, MN, and Fairmont, MN .


Model: SB521 Small Square Baler

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  • Rugged and durable
  • Provides years of dependable service
  • Uses six tines to move crop smoothly
  • 65-in. ​(1,651-mm) pickup or 70-in. (1,778-mm) with flare​


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Model SB521
Bale size  
Bale cross section, h x w, in (mm) 14 x 18 (356 x 457)
Bale length range, in (mm) 12 to 52 (305 to 1321)
Density control, standard Adj spring loaded tension rails
Density control, optional No option
Bale thrower compatible BTX11 available (80 lb bale)
Pickup position Offset to right side
Sweep width on flare, in (mm) 70 (1780)
Sweep width inside, in (mm) 65 (1650)
Width between outside tines, in (mm) 58 (1473)
Tine spacing, in (mm) 2.63 (67)
Number of tines 88
Number of tine bars 4
Windguard description 8 rods
Standard pickup lift Manual
Optional pickup lift Hydraulic
Pickup protection V-belt slippage & lost motion reel drive
Feeder Description Six tines on feeder bar
Feeder opening, sq in (sq cm) 283 (1826), right side entry
Plunger speed, strokes/min 79
Plunger stroke, in (mm) 30 (762)
Tying mechanism  
Tying mechanism type Knotter
Tying capacity (twine), balls 4
Tying capacity (wire), coils No wire
Main Drive  
Flywheel diameter, in (mm) 22 (559)
Flywheel weight, lbs (kg) 248 (112)
PTO Driveline Std three-joint, Category 4
PTO Speed, rpm 540
Main drive protection Shearbolt, overrunning & slip clutches
Standard tire, left 27 x 9.50 - 15, 6PR
Standard tire, right 25 x 7.50 - 15, 6PR
Max. height, in (mm) 58 (1473)
Width, in (mm) 108 (2743)
Length w/o bale chute, in (mm) 198 (5029)
Length w/bale chute, in (mm) 240 (6096)
Weight w/twine tie, lbs (kg) 3,085 (1399)
Weight w/wire tie, lbs (kg) No wire
Tractor Requirement  
Tractor PTO Power, hp (kW) 35 (26)
Sales Literature  
Literature number CIH7180801
Literature date 7/1/2008
Manual number 86624840
Manual date 10/1/2001
Entry Date  
Manufacturing status Current
First Entry Date 8/1/2008
Revision Date 2/1/2012