A: It depends on the specific combination. The DR-J501 is explicitly designed as a multi-function platform: it can test sofas (three-seat configuration with 750 N seat / 400 N backrest loading), office chairs (BIFMA X5.1 seat and backrest durability), and armchair armrests — all on the same frame with interchangeable loading modules and fixture adjustments. Customers frequently run sofa tests in the morning and switch to chair backrest cycling in the afternoon with a 15-minute fixture changeover.

However, some combinations are impractical on a single machine:

• Mattress + chair/sofa: Mattress testers like the DR-J503 have a fundamentally different architecture — a gantry-style rolling mechanism spanning 2200 × 2000 mm with a heavy roller carriage. This is incompatible with chair/sofa testing geometries. Mattress testing requires a dedicated machine.
• Table + chair: Table static load testing per EN 1730 involves very different load application points and often requires higher force capacities. While some universal frames can be adapted, we generally recommend separate machines for table and seating testing.

Our recommendation: if your product range covers sofas and chairs, one DR-J501 covers both. Add a DR-J503 for mattresses and a dedicated table tester if needed. We’ll help you map your product catalog to the minimum equipment set — most mid-size furniture manufacturers operate effectively with 3–4 testing stations.