SAF 328

 

Dimensions

Shaft

db	158.75 mm	Shaft diameter
dc	134.938 mm	Shaft diameter

Bearing seat

Da	300 mm	Diameter of bearing seat
	G7	Tolerance class of bearing seat diameter
Ca	111.785 mm	Width of bearing seat
H1	179.375 mm	Centre height

Outside dimensions

A1	171.45 mm	Foot width
A2	242.888 mm	Overall width
H	360.363 mm	Overall height
H2	69.85 mm	Foot height
J	min.492.125 mm	Distance between attachment bolts
J	max.549.275 mm	Distance between attachment bolts
J1	107.95 mm	Distance between attachment bolts, axial
L	628.65 mm	Overall length
N1	28.575 mm	Width of attachment bolt hole

Threaded holes

R1	115.888 mm	Distance of drain plug from centre
R2	37.306 mm	Height of drain plug position
RG	3/4-14 NPT	Thread of drain hole
PG	1/4-18 NPT	Thread of grease fitting in cap

Recommended safe loads

P60°	234 kN	Safe load at 60° load angle
P90°	140 kN	Safe load at 90° load angle
P120°	85.9 kN	Safe load at 120° load angle
P150°	77 kN	Safe load at 150° load angle
P180°	92.5 kN	Safe load at 180° load angle
Pa	60.1 kN	Safe load, axial

Materials

Housing material	Cast iron
Corrosion protection	Paint - in accordance with ISO 12944-2, corrosivity category C2

Mounting information

Cap bolt		3/4-10 UNC x 6
Number of cap bolts		4
SAE grade of cap bolt		5
Recommended tightening torque for cap bolts		203.373 N·m
Recommended diameter for attachment bolts	G	25.4 mm
Eye bolt		3/8-16 UNC
Number of eyebolts		2
Width of included locating ring		9.728 mm
Initial grease fill, 20%		1 660.148 g
Initial grease fill, 40%		2 544.653 g

SAF 328 Split Plummer Block Housing: Robust Design for Demanding Applications
The SAF 328 Split Plummer Block Housing is engineered for durability and ease of maintenance in heavy-duty industrial environments. Featuring a two-piece split design, this housing allows quick access to bearings without disassembling adjacent machinery, significantly reducing downtime during repairs or replacements. Constructed from high-grade cast iron, it offers exceptional resistance to shock loads, corrosion, and wear, ensuring long-term reliability. Its precision-machined surfaces and self-aligning capabilities accommodate minor shaft misalignments, optimizing performance in uneven operating conditions. Sealed variants with advanced lip seals or labyrinth designs provide enhanced protection against contaminants, making it ideal for harsh environments like mining, cement production, or agricultural machinery.

Versatile Applications Across Industries
Widely trusted in sectors requiring continuous operation, the SAF 328 pillow block housing excels in conveyor systems, crushers, mixers, and heavy-duty fans. Its split design is particularly advantageous in confined spaces or complex setups where traditional solid housings are impractical. The housing supports spherical roller bearings (SRBs) or self-aligning ball bearings, enabling compatibility with shafts ranging from 20mm to 100mm diameters. Industries such as pulp and paper, steel manufacturing, and wastewater treatment rely on its ability to handle high radial loads and moderate axial forces. Customizable lubrication options, including grease fittings and oil bath systems, further adapt it to specific operational needs, ensuring seamless integration into diverse machinery.

Cost-Effective Maintenance and Global Compliance
The SAF 328 prioritizes user convenience with standardized dimensions that align with ISO 113:2016 specifications, ensuring easy replacement and global availability. Pre-drilled mounting holes and corrosion-resistant coatings simplify installation across vertical or horizontal orientations. Operators benefit from reduced lifecycle costs due to extended bearing service intervals and minimized unplanned downtime. Environmentally conscious designs include options for energy-efficient seals and recyclable materials, aligning with modern sustainability goals. Whether used in offshore drilling rigs, grain processing equipment, or industrial blowers, this pillow block housing delivers a proven balance of performance, adaptability, and total cost of ownership for engineers seeking dependable rotating equipment solutions.

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