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.
| 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 |
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.
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.
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.
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.
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).
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.
