B&P S-Series Hand Trucks — SSR Senior + SJR Junior Steel-Frame Liberators, 12 Styles

Diameter: 10 inCapacity: up to 500 lb

This collection gathers plate-mount casters used on hand trucks and mobile equipment. Catalog chips cover wheel diameters 10 in and steel and pneumatic treads. Replace worn corners in matched sets when possible so the cart tracks straight under load. Bring plate and stem measurements when replacing unmarked casters so the new corners sit level. These medium-duty options cover everyday hand trucks and mobile equipment without jumping to extreme forged series.

B&P S-Series Hand Trucks: buying guide

The S-Series is B&P’s steel-frame convertible hand truck line. 12 styles split between SSR (Senior Liberator: 600 lb hand truck mode / 1,200 lb platform mode) and SJR (Junior Liberator: 500 lb hand truck / 800 lb platform). Distinguishing feature vs aluminum-frame Liberators: heavier-gauge steel frame survives high-impact commercial environments where aluminum would deform. Spec for freight terminal, warehouse fleet, beverage distribution.

12 SSR + SJR variantsSteel frame heavy-dutyLiberator convertible mechanism10″ pneumatic or Carefree®

S-Series part number breakdown

Part	Type	Wheel	Configuration Code
SSR	Senior Liberator (1,200 lb platform)	10″ Pneumatic	A1-B8 base
SSR-2	Senior Liberator	10″ Pneumatic alt config	SSR-2 variant
SSR-3	Senior Liberator	10″ Carefree® foam-filled	SSR-3 variant
SSR-4	Senior Liberator	10″ Pneumatic	SSR-4 variant
SSR-5	Senior Liberator	10″ Carefree® foam-filled	SSR-5 variant
SJR	Junior Liberator (800 lb platform)	10″ Pneumatic	B75-C17-D5
SJR-2 / -3	Junior Liberator variants	Pneumatic + Poly Hub	B75-CA2-D5/D6SS

Steel frame vs aluminum frame — when does each matter

B&P offers Liberator hand trucks in both steel-frame (S-Series, this page) and aluminum-frame (the broader aluminum line) configurations. The steel frame weighs 8-12 lb more empty, but handles high-impact use (dropping the truck off a loading dock, repeated forklift contact, freight terminal abuse) better than aluminum without deformation. Aluminum is the spec when the hand truck is operated in clean environments (food prep, retail back-room) where weight savings matter and impact loads are minimal. Steel S-Series is the spec for freight terminal, beverage distribution, appliance delivery — daily commercial high-impact use.

Carefree® wheel option vs standard pneumatic

The SSR-3 and SSR-5 ship with B&P’s Carefree® foam-filled wheel option — closed-cell polyurethane foam fill in a pneumatic tire casing. Eliminates puncture risk while preserving most of the shock absorption of an air-filled pneumatic. Spec for environments where flats would mean equipment downtime — fleet warehouse operations, beverage delivery routes, unmanned shift work. Cost premium runs 25-30% over standard pneumatic.

Common questions on B&P S-Series

What capacity does the SSR-1 Senior support?

Hand truck mode: 600 lb upright cargo. Platform mode: 1,200 lb single-item flat-deck. The same equipment handles both via the Liberator conversion mechanism. Frame dimensions 18″ wide x 50″ tall.

SJR Junior dimensions and capacity?

Hand truck mode: 500 lb. Platform mode: 800 lb. Frame dimensions 14″ wide x 44″ tall — narrower than Senior for tighter aisles and smaller doorways. Used for hospitality back-of-house, light commercial, retail back-room.

Why are there five SSR variants (SSR through SSR-5)?

Each variant ships with a different wheel + nose-plate configuration. SSR base = pneumatic + standard nose. SSR-2 = pneumatic + alt nose. SSR-3 = Carefree® foam-filled. SSR-4 = pneumatic + extended nose. SSR-5 = Carefree® + alt config. Choose based on operating environment (puncture risk = Carefree®, cost-sensitive = pneumatic).

Liberator conversion mechanism — how reliable is it?

Spring-loaded pin lock at each position. Service life on the conversion mechanism: 15-20 years of daily commercial use before the spring needs replacement. Replacement spring kits available at info@casterhq.com.

S-Series AuthorizedFull SSR + SJR steel-frame Liberator line stocked. B&P manufacturer warranty.

Carefree® Wheel OptionFoam-filled puncture-proof wheel variants on SSR-3 and SSR-5.

Custom A-B-C-D CombinationsCustom config quotes 2-4 week production at info@casterhq.com.

BHP: 1-3/4″ × 2-7/8″, slotted to 3″

BHP: 1-3/4″ × 2-15/16″ slotted to 2-3/8″ × 3-3/8″

BHP: 2-5/8” X 3-5/8” (Slotted to 3” x 3”)

BHP: 2-7/16" x 4-15/16" slotted to 3-3/8" x 5-1/4"

(3″ Wide Casters), Industry-Standard

BHP: 3-3/8" x 5-1/4" slotted to 4-1/8" x 6-1/8"

BHP: 4-1/8" x 6" slotted to 4-1/2" x 6-1/8"

View All • 21 Plate Sizes

Plate Casters

Stem Casters

Stainless Casters

Ergonomic Casters

Leveling Casters