Alternate Leg Curling Independent Hamstring Curl Trainer Commercial Leg Curl Machine MND-SPL51

Product Overview

【Independent Prone Curling】：Isolates each hamstring for balanced development and injury prevention

【Adjustable Leg Pad】：Comfortably positions the knees and stabilizes the hips

【Ankle-Friendly Cushion】：Padded roller applies force to the Achilles area, not the ankle bones

【Natural Curl Path】：Cam-guided movement follows the natural arc of the knee joint

The frame geometry is designed to position the hips optimally, reducing low back involvement and ensuring the hamstrings are the prime movers.

Product Description

The SPL51 Alternate Leg Curling Machine is engineered for precise hamstring isolation and balanced lower-body development. Its independent prone curling system allows each leg to work separately, helping correct muscular imbalances while reducing injury risk. The biomechanically optimized frame geometry positions the hips in a stable alignment, minimizing lower back involvement and ensuring the hamstrings remain the primary working muscles throughout the movement.

Designed with a natural cam-guided curling path, the SPL51 follows the anatomical arc of the knee joint for smooth, joint-friendly motion. The adjustable leg pad system stabilizes the hips and supports proper knee positioning, while the ankle-friendly padded roller distributes pressure to the Achilles area instead of sensitive ankle bones. Built for commercial performance, this machine delivers controlled resistance, ergonomic comfort, and long-term durability for high-traffic training environments.

Product Specifications

Key Features & Highlights

• Independent Prone Curling System: Trains each hamstring separately for balanced strength and injury prevention

• Natural Curl Path (Cam-Guided): Follows the knee’s natural arc for smooth and safe movement

• Adjustable Leg Pad: Stabilizes hips and ensures proper knee alignment during training

• Ankle-Friendly Cushion Design: Reduces pressure on ankle bones by targeting the Achilles area

• Optimized Frame Geometry: Minimizes lower back involvement and maximizes hamstring activation

• Commercial-Grade Construction: Built for durability and stability in high-use gym environments

Frequently Asked Questions (FAQ)

Q1: What is your minimum order quantity? Can I start with a single unit?

A1:MOQ is 1 unit on all standard products. For orders under USD 5,000, payment is 100 percent in advance. For one 40HQ container or more, volume pricing discounts apply. You can test one piece first, then scale — we move at your pace. Request a quotation for your order size.

Q2: Do you offer OEM customization? Can I use my own logo and choose colors?

A2:Yes. We offer 40-plus frame color options with 10 standard colors free of charge. OEM logo labels (aluminum, crystal, or standard) include free tooling for orders of one 40HQ or more; smaller orders pay a one-time USD 150 mold fee. Custom packaging and free 2D/3D gym layout design are included. You approve the design render before production begins.

Q3: How long does production and delivery take?

A3:Standard lead times: 25 days for a 20ft container, 35 days for 40ft, 40 days for two 40HQ, and 45 days for three 40HQ. SC and SG series ship within 30 days of receiving the 30 percent deposit. Three parallel factories run year-round, so seasonal peaks do not delay orders. Urgent timelines can be discussed with our production team.

Q4: How do you control product quality? What testing and inspections do you perform?

A4:QC covers 100 percent incoming material inspection, in-process checks at every stage, and finished goods inspection before packing. We use German laser cutting and CNC machinery with a real-time visualized coating system. Every order includes 2 percent free spare parts. All products pass SGS LVD and EMC testing plus RoHS substance compliance verification.

Q5: What certifications do your products hold? Are they valid for my market?

A5:We hold 5 CE/GPSD certificates by UDEM (EU Notified Body 2292), covering treadmills, strength equipment, bikes, multi-functional trainers, and steppers — valid through 2027-2029. We also hold ISO 9001, ISO 14001, and ISO 45001 certifications by JingXin (IAF and CNAS accredited), valid through May 2028, plus SGS reports and RoHS/GPSR Declarations of Conformity for all product categories.

Q6: What are your payment terms and trade conditions?

A6:Standard terms: 30 percent T/T deposit, 70 percent balance before shipment. Orders under USD 5,000 require 100 percent advance payment. We quote FOB Tianjin Xingang by default; CIF terms are available upon request. Our priority bank is JPMorgan Chase Hong Kong (SWIFT: CHASHKHHXXX). PI validity is 21 days from the issue date.

Q7: What warranty and after-sales support do you provide?

A7:Strength equipment frames carry a lifetime warranty. Cardio machine motors are covered for 5 years. Other parts are warranted for 1 to 1.6 years depending on the product category. We respond within 24 hours and provide technical solutions within 72 hours. Spare parts remain available long-term for all models. Repeat buyers can bundle replacement parts into their next shipment.

Q8: Can I order a sample before committing to a bulk order?

A8:Yes. Since our MOQ is 1 unit, you can purchase a single unit as a sample at the standard unit price plus freight. The sample cost can be credited toward your first bulk order. Standard lead times apply to sample orders. This lets you evaluate build quality, finish, and packaging firsthand. Request a quotation for your preferred model.