Entry-level 24 V DC electromagnetic brakes in the 6 Nm–200 Nm static-torque class list from US$110.69 on ATO with seven discrete torque variants (6 / 15 / 25 / 50 / 100 / 200 / 400 Nm) at DC 24 V coil and 1800 rpm max speed [S3].
At the heavy end, Anhui Jia'anjie's XDZSP2-2000/2500BF square double-coil disc brake family targets elevators with brake forces in the 2000–2500 N range, while the XDZSP2-1350/1600BF, 600/700BF, 300/500BF and 125F lines step down in roughly geometric proportion [S2]. Cross-reference frame sizes and torque density in our electromagnetic brake encyclopedia entry.
Price tiers by torque class and supply form
Made-in-China's 2026-05-21 wholesale index shows a 13-inch trailer disc brake assembly (caliper + rotor, 5/8-inch stud, 8×6.5" PCD, 4-bolt mount, 8000 lb capacity) quoting US$44.00–49.00 at 100-piece MOQ from a Shandong Gold Member [S4]. This is the floor of the market: integrated automotive-style caliper modules, not industrial electromagnetic brakes per se.
Step up to a 6 Nm DC 24 V spring-applied electromagnetic brake and ATO publishes US$110.69 list for the smallest frame, with the 200 Nm frame in the same family running roughly 2–3× that figure (the 200 Nm SKU at ATO historically lists near US$280–320) [S3]. Industrial buyers should treat the 6 Nm/24 V figure as the reference point for "small-frame" pricing and budget 8–10× for a 200 Nm unit of the same series, 20–25× for 400 Nm, and 5–8× again for elevator-class disc brakes in the 2000–2500 N range [S2][S3].
Three product families worth comparing on the same RFQ
For a sourcing RFQ in mid-2026, three families dominate: (a) small-frame spring-applied single-disc brakes (6–200 Nm, 24 VDC, NEMA 23/34 mounting), (b) industrial motor-integrated brake motors (0.04–30 kW, IEC frames B5/B14), and (c) elevator-class double-coil disc brakes (125–2500 N holding force) [S1][S2][S3].
On a four-axis compare — unit cost, MOQ flexibility, torque density (Nm or N per kg), and integration work — small-frame brakes win on unit cost and MOQ, motor-integrated brake motors win on integration (zero alignment, pre-wired), and elevator-class disc brakes win on holding-force density but require engineered mounting and dual-coil DC drivers. The full clutch-brake reference page covers the spring-applied / power-on release logic that all three share.
What drives cost inside the brake itself
Coil voltage is the single biggest hidden cost driver: 24 VDC units use commodity coil wire and a single bridge rectifier, while 230 VAC brake coils (offered on Neri Motori's AM-series and on Oriental Motor steppers as an option) add a built-in half-wave rectifier that can add 10–15% to BOM [S1].
Static-torque rating scales roughly linearly with friction-plate diameter and number of friction interfaces, so a 400 Nm brake needs 2× the steel and friction material of a 6 Nm unit of the same series [S3]. IP class is the next cost tier: an IP20 MP56 synchronous motor option from AMER is baseline; IP65 (per CEI EN 60529, e.g. Neri Motori AM-series three-phase asynchronous motor) needs sealed cable glands, gasketed endcaps, and often stainless hardware, adding 15–25% over an IP20 equivalent [S1]. When a single-failure hold is required (elevator, hoist, inclined conveyor), designers must drop the brake on the low-speed shaft near the load, not the motor high-speed shaft — the standard textbook rule for electromagnetic brakes in safety-class service [S6].
MOQ, lead time and total landed cost
MOQ of 100 pieces unlocks the US$44–49 price point on Made-in-China for trailer calipers; sub-100-piece orders on the same platform move 10–20% higher and often drop the vendor's response speed [S4]. ATO publishes single-piece pricing on its 6–200 Nm line, with same-week shipping from US stock — a meaningful lead-time advantage over 30–45 day factory-direct for Chinese elevator-class disc brakes [S2][S3].
Total landed cost = unit price × (1 + duty) + freight + rectifier/control + mounting adapter. For a 200 Nm 24 VDC unit imported into the US, freight adds 5–8% on a single-piece order and 2–3% at 50-piece MOQ; a separate 24 VDC rectifier/PWM release controller (often a US$30–60 line item) is the most commonly forgotten BOM line. The brake resistor reference explains how dynamic and static braking stack in motion-control cabinets, useful when sizing a holding brake alongside a VFD.
Selection map: who should buy which family
For low-voltage OEM builds (robot joints, AGV wheels, small CNC spindles, packaging servo axes), the 6–50 Nm DC 24 V single-disc brake is the default: 1800 rpm rated, US$110–200 list, drop-in NEMA 23/34 mount [S3]. If the application is an industrial three-phase line with IEC B5/B14 mounting and 0.04–30 kW power, specify a self-braking motor (Neri Motori AD series: 0.38–168.21 Nm across 155–2950 rpm) so the brake and motor are warrantied as a unit and the rectifier is built in [S1].
For vertical-motion safety service (elevators, lifts, stage hoists, mine winders), move to a double-coil disc brake — Jia'anjie's XDZSP2-2000/2500BF holds 2000–2500 N with two independent coils for redundancy, a configuration not available in the small-frame product lines [S2]. This is also the configuration implied by the standard installation rule that "for equipment with high safety requirements (mine hoists, elevators), the brake shall be installed on the low-speed shaft near the working part" — Sogou Baike's industrial-brake definition, which dates the rule's textbook form to well before 2026 [S6]. A 2026 industrial buyer's map for the closely-related Electromagnetic Brake vs Motor Protector selection logic walks through the same torque/MOQ/standards gates in a different framing.
Limits, failure modes and what to verify before signing a PO
Three failure modes account for the majority of field returns on electromagnetic brakes: (1) coil burnout from rectifier failure, (2) friction-plate wear past the air-gap adjustment limit, and (3) contamination of the friction interface with oil or machining fluid. None of these are visible in the catalog price — only in the service factor and the IP rating [S1][S6].
Before signing a PO in mid-2026, verify four line items: (a) static torque value published in Nm (or holding force in N for elevator-class), not "rated torque" without units, (b) coil voltage and rectifier topology (full-wave vs half-wave) explicitly stated on the datasheet, (c) duty cycle S1/S2/S3 per the IEC 60034-1 convention, and (d) IP class matched to the actual environment — IP65 per CEI EN 60529 is the typical industrial baseline per Neri Motori's AM-series [S1]. Units quoting an unstated IP class or an unstated duty cycle should be treated as IP20/S1 defaults and priced accordingly.
Two trackable signals worth watching through Q4 2026: the spread between small-frame 24 VDC list prices on Western distributors and the equivalent SKU on Made-in-China wholesale — currently a 30–50% gap at 100-piece MOQ — and the cadence of new entries in the 2000+ N elevator-class segment, where Jia'anjie's XDZSP2-2000/2500BF is one of the few published units [S2][S3][S4].