Machine models

Case IH SB521 to SB551 specifications

Entries in this reference
Listing-entry count
5

Short answer

Case IH SB521 to SB551: balers.

Selected configuration figures
Configuration	Documented field and quantity
SB521	Tractor PTO Power Required 35 hp Sweep Width Inside 64.97 in
SB531	Tractor PTO Power Required 62 hp Sweep Width Inside 64.97 in
SB541	Tractor PTO Power Required 75 hp Sweep Width Inside 74.81 in
SB541C	Tractor PTO Power Required 75 hp Sweep Width Inside 74.81 in
SB551	Tractor PTO Power Required 75 hp Sweep Width Inside 74.81 in

SB521 to SB551 specification matrix — Listing labels reported by the source
Publisher name	Source guide	Listing-entry count	Labels named by the source
Case IH	SB521 to SB551	5	SB521, SB531, SB541, SB541C, and SB551

Baler Pickup
Specification	SB521	SB531	SB541	SB541C	SB551
Windguard Description	8 rods	8 rods	13 rods	13 rods	13 rods
Standard Pickup Lift	Manual	Manual	Manual	Hydraulic	Manual
Sweep Width Inside	64.97 in	64.97 in	74.81 in	74.81 in	74.81 in
Sweep Width On Flare	70.08 in	70.08 in	79.93 in	79.93 in	79.93 in
Tine Spacing	2.64 in	2.64 in	2.64 in	2.64 in	2.64 in
Width Between Outside Tines	58 in	58 in	67.49 in	67.49 in	67.49 in
Number Of Tine Bars	4	5	6	6	6
Number Of Tines	88	110	156	156	156
Optional Pickup Lift	Hydraulic	Hydraulic	Hydraulic	No option	Hydraulic
Pickup Position	Offset to right side	Offset to right side	Offset to right side	Offset to right side	Offset to right side
Pickup Protection	V-belt slippage & lost motion reel drive	V-belt slippage & lost motion reel drive	V-belt slippage & lost motion reel drive	V-belt slippage & lost motion reel drive	V-belt slippage & lost motion reel drive

Dimensions and weight
Specification	SB521	SB531	SB541	SB541C	SB551
Length Without Bale Chute	198 in	205 in	205 in	217.01 in	217.01 in
Maximum Height	58 in	70 in	70.99 in	70.99 in	70.99 in
Tractor PTO Power Required	35 hp	62 hp	75 hp	75 hp	75 hp
Width	9 ft	9.17 ft	10 ft	10 ft	10 ft
Length With Bale Chute	240 in	247.01 in	247.01 in	259.06 in	247.01 in

Tying Mechanism
Specification	SB521	SB531	SB541	SB541C	SB551
Tying Mechanism Type	Knotter	Knotter	Knotter	HD Knotter	Knotter
Tying Twine Capacity	4 balls	6balls	8 balls	8 balls	8 balls
Tying Wire Capacity	No wire	No wire	No wire	No wire	No wire

Specification	SB521	SB531
Tying Capacity	4	4

Maindrive
Specification	SB521	SB531	SB541	SB541C	SB551
Flywheel Diameter	22.1 in	22.1 in	22.1 in	22.1 in	22.1 in
Flywheel Weight	247 lb	247 lb	247 lb	247 lb	357.2 lb
PTO Driveline	Std three-joint, Category 4	Std three-joint, Category 4	Std three-joint, Category 6	Std three-joint, Category 6	Std three-joint, Category 6
PTO Speed	540 rpm	540 rpm	540 rpm	540 rpm	540 rpm
Main Drive Protection	Std three-joint, Category 4	Std three-joint, Category 4	Shearbolt, overrunning & slip clutches	Shear bolt, overrunning & slip clutches	Shear bolt, overrunning & slip clutches

Sales Literature
Specification	SB521	SB531	SB541	SB541C	SB551
Literature Number	CIH7180801	CIH7180801	CIH7180801	HF-5117-09	HF-5117-09
Literature Date	July, 2008	July, 2008	July, 2008	September, 2009	September, 2009

Specification	SB521	SB531	SB541
Document Number	86624840	86624842	86624842
Document Date	10/1/2001	10/1/2001	10/1/2001

Years Of Manufacture
Specification	SB521	SB531	SB541	SB541C	SB551
Manufacturing Status	Current	Current	Current	Current	Current
First Entry Date	8/21/2008	8/21/2008	8/21/2008	8/25/2009	8/25/2009
Revision Date	2/27/2012	2/27/2012	2/27/2012	2/27/2012 to 6/15/2014	2/27/2012 to 6/15/2014

Bale Size
Specification	SB521	SB531	SB541	SB541C	SB551
Bale Cross Section,Height X Width(In,Mm)	14 x 18 (356 x 457)	14 x 18 (356 x 457)	14 x 18 (356 x 457)	14 x 18 (356 x 457)	16 x 18 (406 x 457)
Bale Length Range (In,Mm)	12 to 52 (305 to 1321)	12 to 52 (305 to 1321)	12 to 52 (305 to 1321)	12 to 52 (305 to 1321)	12 to 52 (305 to 1321)
Density Control, Standard	Adj spring loaded tension rails	Adj spring loaded tension rails	Adj spring loaded tension rails	Adj hydraulic density	Adj hydraulic density
Density Control, Optional	No option	No option	No option	No option	No option
Bale Thrower Compatible	BTX11 available (80 lb bale)	BTX11 available (80 lb bale)	BTX11 available (80 lb bale)	No	No

Feeding
Specification	SB521	SB531	SB541	SB541C	SB551
Feeder Description	Six tines on feeder bar	Rotary feeder w/ packer	Rotary feeder w/ packer	Rotary feeder w/ packer	Rotary feeder w/ packer
Feeder Opening Sq In (Sq Cm)	283 (1826), right side entry	283 (1826), right side entry	283 (1826), right side entry	284 (1832), right side entry	318 (2052),right side entry

Tires
Specification	SB521	SB531	SB541	SB541C	SB551
Standard Tireleft	27 x 9.50 - 15, 6PR	31 x 13.50 - 15, 6PR	31 x 13.50 - 15, 6PR	14L x 16.1, 6PR	14L x 16.1, 6PR
Standard Tire Right	25 x 7.50 - 15, 6PR	27 x 9.50 - 15, 6PR	27 x 9.50 - 15, 6PR	11L x 14, 6PR	11L x 15, 6PR

Weights
Specification	SB521	SB531	SB541	SB541C	SB551
Weight With Twine Tie	3,084 lb	3,400 lb	3,715 lb	3,715 lb	4,200 lb

Specification	SB541	SB541C
Weight With Wire Tie	3,852 lb	3,852 lb

Plunger
Specification	SB521	SB531	SB541	SB541C	SB551
Plunger Speed (Strokes/Min)	9	93	79	93	93
Plunger Stroke	30 in	30 in	30 in	30 in	30 in

Variants — Source comparison annotation
Source guide	Differing-field count reported
SB521 to SB551	35

Case IH SB521 to SB551: baler

SB521 to SB551: forum references — Forum-title search
Forum index	Equipment class queried	Names in the search	Matching titles
The Farming Forum and TractorByNet	baler	Case IH and the SB541 line that the SB541, SB541C belongs to (no title names the exact model). That is too few titles to say what owners mostly ask about, so the most recent are listed instead	4

Problem In Case Square Baler Sb 541 (The Farming Forum, 2024-07-20)
NH 5070 Baler Vs Case Ih Sb541 Baler (TractorByNet, 2011-08-18)

Used market for the SB521 to SB551 — Dated first-page listing snapshot
Observation date	Listing source	Equipment search	Listings
2026-09-24	TractorHouse	Case IH baler	55

Model	Listed	Model years	Lowest asking	Highest asking	Median asking	Median hours
SB521	2	2019	$18,000	$23,500	$20,750	None shown
SB531	7	2011 to 2025	$15,900	$26,200	$24,150	None shown
SB541	21	2009 to 2026	$10,636	$46,924	$19,500	None shown
SB541C	25	2010 to 2026	$11,250	$42,500	$22,500	None shown

SB521 to SB551: recall reference — Dated CPSC search
Search date	Database	Names queried	Search result
2026-09-24	U.S. Consumer Product Safety Commission	Case IH together with the baler SB521, SB531, SB541, SB541C	No matching recall in this search

Sources for this page
Evidence class	Document, classification and recorded date
Reference site	Reference site: Case IH SB521 — RitchieSpecs. Observed 2026-09-24.
Reference site	Reference site: Case IH SB531 — RitchieSpecs. Observed 2026-09-24.
Reference site	Reference site: Case IH SB541 — RitchieSpecs. Observed 2026-09-24.
Reference site	Reference site: Case IH SB541C — RitchieSpecs. Observed 2026-09-24.
Reference site	Reference site: Case IH SB551 — RitchieSpecs. Observed 2026-09-24.
Forum threads	Forum threads: The Farming Forum thread index for Case IH SB521 to SB551 — The Farming Forum. Observed 2026-09-25.
Forum threads	Forum threads: TractorByNet thread index for Case IH SB521 to SB551 — TractorByNet. Observed 2026-09-24.
Used-market listings	Used-market listings: TractorHouse listings for Case IH SB521 — TractorHouse. Observed 2026-09-24.
Federal agency data	Federal agency data: Recall database search for Case IH — U.S. Consumer Product Safety Commission. Observed 2026-09-24.

Recorded observations — Forum-title snapshot
Observation field	Recorded value
Title count	4
Forum indexes	The Farming Forum and TractorByNet
Search wording	the SB521 to SB551 baler
Latest title quoted by the reference	Problem In Case Square Baler Sb 541

Case IH SB521 to SB551: Configuration records

SB521

Specification	Source figure
Baler Pickup
Windguard Description	8 rods
Standard Pickup Lift	Manual
Sweep Width Inside	64.97 in
Sweep Width On Flare	70.08 in
Tine Spacing	2.64 in
Width Between Outside Tines	58 in
Number Of Tine Bars	4
Number Of Tines	88
Optional Pickup Lift	Hydraulic
Pickup Position	Offset to right side
Pickup Protection	V-belt slippage & lost motion reel drive
Dimensions and weight
Length Without Bale Chute	198 in
Maximum Height	58 in
Tractor PTO Power Required	35 hp
Width	9 ft
Length With Bale Chute	240 in
Tying Mechanism
Tying Mechanism Type	Knotter
Tying Twine Capacity	4 balls
Tying Capacity	4
Tying Wire Capacity	No wire
Maindrive
Flywheel Diameter	22.1 in
Flywheel Weight	247 lb
PTO Driveline	Std three-joint, Category 4
PTO Speed	540 rpm
Main Drive Protection	Std three-joint, Category 4
Sales Literature
Literature Number	CIH7180801
Literature Date	July, 2008
Document Number	86624840
Document Date	10/1/2001
Years Of Manufacture
Manufacturing Status	Current
First Entry Date	8/21/2008
Revision Date	2/27/2012
Bale Size
Bale Cross Section,Height X Width(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)
Feeding
Feeder Description	Six tines on feeder bar
Feeder Opening Sq In (Sq Cm)	283 (1826), right side entry
Tires
Standard Tireleft	27 x 9.50 - 15, 6PR
Standard Tire Right	25 x 7.50 - 15, 6PR
Weights
Weight With Twine Tie	3,084 lb
Plunger
Plunger Speed (Strokes/Min)	9
Plunger Stroke	30 in

Source

SB531

Specification	Source figure
Baler Pickup
Windguard Description	8 rods
Standard Pickup Lift	Manual
Sweep Width Inside	64.97 in
Sweep Width On Flare	70.08 in
Tine Spacing	2.64 in
Width Between Outside Tines	58 in
Number Of Tine Bars	5
Number Of Tines	110
Optional Pickup Lift	Hydraulic
Pickup Position	Offset to right side
Pickup Protection	V-belt slippage & lost motion reel drive
Dimensions and weight
Length Without Bale Chute	205 in
Maximum Height	70 in
Tractor PTO Power Required	62 hp
Width	9.17 ft
Length With Bale Chute	247.01 in
Tying Mechanism
Tying Mechanism Type	Knotter
Tying Twine Capacity	6balls
Tying Capacity	4
Tying Wire Capacity	No wire
Maindrive
Flywheel Diameter	22.1 in
Flywheel Weight	247 lb
PTO Driveline	Std three-joint, Category 4
PTO Speed	540 rpm
Main Drive Protection	Std three-joint, Category 4
Sales Literature
Literature Number	CIH7180801
Literature Date	July, 2008
Document Number	86624842
Document Date	10/1/2001
Years Of Manufacture
Manufacturing Status	Current
First Entry Date	8/21/2008
Revision Date	2/27/2012
Bale Size
Bale Cross Section,Height X Width(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)
Feeding
Feeder Description	Rotary feeder w/ packer
Feeder Opening Sq In (Sq Cm)	283 (1826), right side entry
Tires
Standard Tireleft	31 x 13.50 - 15, 6PR
Standard Tire Right	27 x 9.50 - 15, 6PR
Weights
Weight With Twine Tie	3,400 lb
Plunger
Plunger Speed (Strokes/Min)	93
Plunger Stroke	30 in

Source

SB541

Specification	Source figure
Baler Pickup
Windguard Description	13 rods
Standard Pickup Lift	Manual
Sweep Width Inside	74.81 in
Sweep Width On Flare	79.93 in
Tine Spacing	2.64 in
Width Between Outside Tines	67.49 in
Number Of Tine Bars	6
Number Of Tines	156
Optional Pickup Lift	Hydraulic
Pickup Position	Offset to right side
Pickup Protection	V-belt slippage & lost motion reel drive
Dimensions and weight
Length Without Bale Chute	205 in
Maximum Height	70.99 in
Tractor PTO Power Required	75 hp
Width	10 ft
Length With Bale Chute	247.01 in
Tying Mechanism
Tying Mechanism Type	Knotter
Tying Twine Capacity	8 balls
Tying Wire Capacity	No wire
Maindrive
Flywheel Diameter	22.1 in
Flywheel Weight	247 lb
PTO Driveline	Std three-joint, Category 6
PTO Speed	540 rpm
Main Drive Protection	Shearbolt, overrunning & slip clutches
Sales Literature
Literature Number	CIH7180801
Literature Date	July, 2008
Document Number	86624842
Document Date	10/1/2001
Years Of Manufacture
Manufacturing Status	Current
First Entry Date	8/21/2008
Revision Date	2/27/2012
Bale Size
Bale Cross Section,Height X Width(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)
Feeding
Feeder Description	Rotary feeder w/ packer
Feeder Opening Sq In (Sq Cm)	283 (1826), right side entry
Tires
Standard Tireleft	31 x 13.50 - 15, 6PR
Standard Tire Right	27 x 9.50 - 15, 6PR
Weights
Weight With Twine Tie	3,715 lb
Weight With Wire Tie	3,852 lb
Plunger
Plunger Speed (Strokes/Min)	79
Plunger Stroke	30 in

Source

SB541C

Specification	Source figure
Baler Pickup
Windguard Description	13 rods
Standard Pickup Lift	Hydraulic
Sweep Width Inside	74.81 in
Sweep Width On Flare	79.93 in
Tine Spacing	2.64 in
Width Between Outside Tines	67.49 in
Number Of Tine Bars	6
Number Of Tines	156
Optional Pickup Lift	No option
Pickup Position	Offset to right side
Pickup Protection	V-belt slippage & lost motion reel drive
Dimensions and weight
Length Without Bale Chute	217.01 in
Maximum Height	70.99 in
Tractor PTO Power Required	75 hp
Width	10 ft
Length With Bale Chute	259.06 in
Tying Mechanism
Tying Mechanism Type	HD Knotter
Tying Twine Capacity	8 balls
Tying Wire Capacity	No wire
Maindrive
Flywheel Diameter	22.1 in
Flywheel Weight	247 lb
PTO Driveline	Std three-joint, Category 6
PTO Speed	540 rpm
Main Drive Protection	Shear bolt, overrunning & slip clutches
Sales Literature
Literature Number	HF-5117-09
Literature Date	September, 2009
Years Of Manufacture
Manufacturing Status	Current
First Entry Date	8/25/2009
Revision Date	2/27/2012 to 6/15/2014
Bale Size
Bale Cross Section,Height X Width(In,Mm)	14 x 18 (356 x 457)
Bale Length Range (In,Mm)	12 to 52 (305 to 1321)
Density Control, Standard	Adj hydraulic density
Density Control, Optional	No option
Bale Thrower Compatible	No
Feeding
Feeder Description	Rotary feeder w/ packer
Feeder Opening Sq In (Sq Cm)	284 (1832), right side entry
Tires
Standard Tireleft	14L x 16.1, 6PR
Standard Tire Right	11L x 14, 6PR
Weights
Weight With Twine Tie	3,715 lb
Weight With Wire Tie	3,852 lb
Plunger
Plunger Speed (Strokes/Min)	93
Plunger Stroke	30 in

Source

SB551

Specification	Source figure
Baler Pickup
Windguard Description	13 rods
Standard Pickup Lift	Manual
Sweep Width Inside	74.81 in
Sweep Width On Flare	79.93 in
Tine Spacing	2.64 in
Width Between Outside Tines	67.49 in
Number Of Tine Bars	6
Number Of Tines	156
Optional Pickup Lift	Hydraulic
Pickup Position	Offset to right side
Pickup Protection	V-belt slippage & lost motion reel drive
Dimensions and weight
Length Without Bale Chute	217.01 in
Maximum Height	70.99 in
Tractor PTO Power Required	75 hp
Width	10 ft
Length With Bale Chute	247.01 in
Tying Mechanism
Tying Mechanism Type	Knotter
Tying Twine Capacity	8 balls
Tying Wire Capacity	No wire
Maindrive
Flywheel Diameter	22.1 in
Flywheel Weight	357.2 lb
PTO Driveline	Std three-joint, Category 6
PTO Speed	540 rpm
Main Drive Protection	Shear bolt, overrunning & slip clutches
Sales Literature
Literature Number	HF-5117-09
Literature Date	September, 2009
Years Of Manufacture
Manufacturing Status	Current
First Entry Date	8/25/2009
Revision Date	2/27/2012 to 6/15/2014
Bale Size
Bale Cross Section,Height X Width(In,Mm)	16 x 18 (406 x 457)
Bale Length Range (In,Mm)	12 to 52 (305 to 1321)
Density Control, Standard	Adj hydraulic density
Density Control, Optional	No option
Bale Thrower Compatible	No
Feeding
Feeder Description	Rotary feeder w/ packer
Feeder Opening Sq In (Sq Cm)	318 (2052),right side entry
Tires
Standard Tireleft	14L x 16.1, 6PR
Standard Tire Right	11L x 15, 6PR
Weights
Weight With Twine Tie	4,200 lb
Plunger
Plunger Speed (Strokes/Min)	93
Plunger Stroke	30 in

Source

More in Case IH: SBX520–SBX550, RB444–RB565, LBX332 Packer Cutter–LBX432 Standard specs.

Case IH SB521 to SB551 specifications

Case IH SB521 to SB551: baler

Sources for this page

Case IH SB521 to SB551: Configuration records