BSW-SPL57 Donkey Calf Machine – Deep Stretch Calf Developer
Experience the intense calf stretch of the classic donkey calf raise with modern machine stability. This position emphasizes the gastrocnemius for peak calf development.
Model: BSW-SPL57
Size (LxWxH): 1920 x 1360 x 1620 mm
Net Weight: 197 kg
Primary Muscles Trained: Gastrocnemius, Soleus
| Quantity: | |
|---|---|
SPL57
MND Fitness
950691
Product Overview
【Bent-Over Position】：Allows for a greater range of motion and deeper calf stretch than standing variations
【Adjustable Torso Support】：Padded platform stabilizes the upper body for pure calf isolation
【Plate-Loaded Resistance】：Simple, direct loading system using standard Olympic plates
【Textured Foot Platform】：Secure, non-slip surface for powerful toe-off
The Donkey Calf machine's leverage system is precision-engineered to provide smooth, consistent resistance that matches the muscle's strength curve throughout the movement.
Product Description
The SPL57 Donkey Calf Raise is a premium lower-body isolation machine engineered to maximize calf muscle development through a biomechanically optimized bent-over training position. By shifting the body into a forward-leaning stance, it enables a deeper stretch and greater range of motion compared to traditional standing calf exercises, resulting in superior muscle activation and growth potential.
Designed for commercial gym environments, the SPL57 features a stable, heavy-duty frame and a precision-engineered leverage system that delivers smooth and consistent resistance throughout the entire movement. The adjustable torso support with padded platform ensures proper upper-body stabilization, allowing users to focus entirely on calf isolation without unnecessary strain or compensation.
With a straightforward plate-loaded resistance system compatible with standard Olympic weight plates, users can easily adjust training intensity. The textured, non-slip foot platform provides secure footing for powerful toe-off and controlled movement execution, enhancing both safety and performance.
Product Specifications
| item | value |
|---|---|
| Function | LEGS |
| Place of Origin | China |
| Shandong | |
| Type | Large Loader |
| Packaging | Wooden Box |
| Brand Name | MND |
| Model Number | SPL57 |
| Size | 1920*1360*1620mm |
| Capacity | Other |
| Material | Steel |
| Application | Commercial Use |
| Feature | Safety, Durable |
Key Features & Highlights
1. Bent-Over Donkey Calf Training Position
Forward-leaning design allows deeper stretch and greater range of motion for superior calf activation.
2. Adjustable Torso Support System
Padded upper-body platform stabilizes the torso, ensuring pure calf isolation and reducing unnecessary movement.
3. Plate-Loaded Resistance System
Compatible with standard Olympic weight plates for simple, efficient, and flexible loading.
4. Textured Non-Slip Foot Platform
Secure grip surface enhances stability and supports powerful, controlled calf contractions.
5. Precision Leverage Mechanism
Engineered system delivers smooth, consistent resistance aligned with the calf muscle strength curve.
6. Commercial-Grade Heavy-Duty Frame
Built for high-frequency use in professional gyms with excellent structural durability and stability.
7. Enhanced Calf Muscle Isolation
Design minimizes secondary muscle involvement for maximum targeting of gastrocnemius and soleus muscles.
8. Ideal for Strength & Athletic Training
Perfect for commercial gyms, sports performance centers, and lower-body specialization programs.
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.
